Which e-signature tool fits your small team's situation
If your renewal, data residency or lock-in concern is pushing you to choose, the short answer is this: signNow fits a small team that wants a managed service with no servers to run and vendor-run support, while self-hosted OpenSign fits a team that needs signer data and audit records kept on its own infrastructure and has the operating capacity to run Docker and MongoDB. Neither choice is a cost-free default, so decide on operations and data control first, then price the option that matches.
SignNow is the simpler path when nobody on the team wants to patch containers, back up a database or watch a restart. The vendor carries the hosting, uptime and support, and your staff manage users and documents through the product. OpenSign moves those responsibilities to you. Its README describes a Docker install that fetches a docker-compose.yml, a Caddyfile and an environment file, and it warns that the default MongoDB in that deployment is not persistent and is cleared on every restart unless you supply your own MongoDB connection URL. Confirm that you can provision a persistent database, TLS, backups and upgrades before you commit.
Choose OpenSign if you need signer email addresses, IP addresses and activity logs to stay in your environment, and if your team can own that stack. The decision turns on four points: whether you need sequential signing order, whether guest signers must verify by email OTP, whether you will call the API from other systems, and how much operating capacity you can staff. Legal effect also depends on the document type and jurisdiction. Under the US ESIGN Act, an electronic signature may not be denied legal effect solely because it is electronic, but the Act excludes certain records, including wills, most family law records and court documents, so have counsel confirm the document types you plan to sign. Confirm the signature level required too: neither signNow nor OpenSign removes the need to determine whether a simple, advanced or qualified signature is required under eIDAS for your EU transactions.
Scenarios where each option is the better fit
This table maps common team situations to the option that usually fits better, with the condition that drives the choice. The scenarios are illustrative, so test each one against your own signing volume, hosting skills and legal requirements before deciding.
| Team situation | Better fit | Driving condition |
|---|---|---|
| Small team that wants no server operations | signNow, or a managed signing service | Someone must be on call for Docker, MongoDB and TLS upkeep under OpenSign, which a hosted plan removes. Confirm your residency needs first. |
| Team with residency or confidentiality rules | OpenSign, self-hosted in your own environment | Documents and signer data stay on servers you control. Confirm where signNow stores data and whether its terms meet your rules. |
| Team that needs guest signers verified by email OTP | OpenSign | OpenSign verifies guest signers by email OTP and records timestamps, IP addresses and signer contact details in its activity log. |
| Team with an in-house DevOps function | OpenSign, self-hosted | Your staff can own the Docker deployment, backups and a persistent MongoDB connection, which the README requires outside the default setup. |
| Team that needs eIDAS advanced or qualified signatures | Confirm with the vendor before choosing either option | The EU defines AdES and QES by technical and trust-service requirements. Ask whether OpenSign or signNow supports them and whether a qualified trust service provider is needed. |
| Team with a fixed operating budget | OpenSign, if you can cover hosting and admin time | Licensing is free under AGPL-3, but infrastructure, backups and upkeep recur. Compare those costs with a per-user plan before deciding. |
Where signer data lives and who controls it
A signature platform holds contracts, signer identities and proof of who signed what, so where that data sits and who can reach it matters as much as the signing flow. Under signNow, the vendor operates the hosted service; with OpenSign, your team decides the location, access and retention, and also takes on the work that comes with those decisions.
Where the data is stored
Under signNow, documents, signer details and audit records sit in the vendor's hosted environment, so the question for your legal and security teams is which regions, subprocessors and contractual terms apply. With self-hosted OpenSign, the documents and the MongoDB database live in your own cloud account, data center or private network. Check where the database volume and any file storage are mounted, since OpenSign's data store is what holds the signed PDFs and activity logs.
Identity and access controls you own
With OpenSign, the administrator accounts, user roles, and the guest signing flow are configured by your team, including the email OTP verification used for guest signers. Decide who can create templates, who can download completed documents, and who can read activity logs that carry IP addresses and signer contact details. Put the application behind your existing identity provider or reverse proxy where your policy requires it, and confirm which login options the release you deploy supports.
Evidence the team must produce
Audit trail retention, backups and periodic access reviews are not supplied by OpenSign. Your organization defines how long completion certificates and activity logs are kept, tests restores of the MongoDB data, and records who reviewed access and when. DeployOpen can help design these controls and collect the evidence, but independent auditors and certification bodies issue any attestation. Note that the default MongoDB in the Docker deployment is not persistent, so backup scope must start with your own database connection.
Licensing when you modify OpenSign
OpenSign is licensed under AGPL-3, a copyleft license. Running an unmodified copy for internal signing carries different obligations than running a modified version that users reach over a network, where the AGPL's source-offer terms can apply. Ask counsel to confirm how your planned customizations, internal integrations and any external-facing signing pages fall under the license before you change the code. Keep a record of the release version you deployed, since the project publishes its own release history.
What running OpenSign with Docker and MongoDB involves
The README's Docker path is the entry point, and it is short: one-line install commands fetch a docker-compose.yml, a Caddyfile and an environment file, then docker compose up starts the stack. Docker and git are the stated prerequisites. The install is quick, but it is the starting point of the work, not the finish. The most important line in the README for an operator is the MongoDB warning: the default MongoDB instance in the Docker deployment is not persistent and is cleared on every restart unless you supply your own MongoDB connection URL. Before any signer touches the system, the team should point OpenSign at a managed or self-run MongoDB with its own storage, and confirm in the environment file which connection setting carries that URL in the release being deployed.
Once the stack runs, the team owns everything around it. That means a persistent MongoDB with tested backups and restores, since signed PDFs, activity logs with IP addresses and signer contact details, and completion certificates all depend on the database and file storage being intact. It also means TLS on the public hostname, which the bundled Caddyfile is meant to handle, with someone checking certificate renewal, and monitoring for container health, disk use and failed signing emails. Upgrades are a recurring task: OpenSign has published numbered releases, so the team should plan a staging rehearsal, a backup taken immediately beforehand, and a rollback path for each one. Confirm the exact steps for each of these against the current README and release notes rather than relying on this summary.
The skills required are Linux administration, Docker and Compose, basic MongoDB operations (replica sets, backups, restores, user management), reverse proxy and certificate handling, and enough JavaScript or API knowledge to troubleshoot the Node.js service. Someone must also own the decision on who is on call for a failed signing run that blocks a contract deadline. Ask DeployOpen or another implementer to write the runbook, confirm the MongoDB topology with your database team, and test a full restore before go-live. For a team without these skills in-house, a fixed-scope implementation with a written handover is the safer route.
Cost components on the signNow side and the OpenSign side
Moving from signNow to OpenSign replaces a subscription with a set of components you own: software, hosting, a persistent database, backups, certificates and staff time. Each one is one-time or recurring, and each scales with different drivers, so ask for them separately in any quote.
signNow subscription and seats
On the signNow side, you pay a recurring subscription that is typically tied to per-user seats and plan limits, including yearly signature invite allowances. Review how many users send documents, how many invites your team consumes each year and whether any plan tier you need is sold only through sales. Ask your vendor for the written terms that govern renewal, overage and seat changes before you compare totals.
OpenSign software licensing
OpenSign is licensed under AGPL-3, so the community code carries no license fee for you to run it. The recurring cost is therefore not the software itself but the obligations that come with AGPL-3 if you modify and offer it to users over a network. Confirm with counsel whether any changes you make trigger source disclosure, and budget the time that review takes.
Hosting compute and storage
Self-hosting OpenSign means paying for a virtual machine or server that runs its Docker stack, plus disk for uploaded PDFs, signed copies and completion certificates. Compute is recurring and grows with signing volume and the number of concurrent users. Storage grows with every document you keep, so set a retention rule early and price the disk for the retention period, not just current volume.
Persistent MongoDB
OpenSign stores its data in MongoDB, and its README warns that the default MongoDB in the Docker deployment is not persistent and is cleared on every restart unless you supply your own connection URL. You therefore pay for a persistent database, either a managed service or a self-run instance with replication, backups and storage. This is a recurring cost and the most common place where a pilot becomes a production outage if skipped.
Backups, TLS and domain
Signed documents and audit records are evidence, so backups of both the file store and the database are a recurring cost, along with restore testing. Plan for a domain name and a TLS certificate for the signing address, which the bundled Caddyfile helps with but does not remove as a responsibility. Ask what backup frequency and retention your legal and records policies require before pricing storage.
Staff time for upgrades and monitoring
This is the component most often underestimated. Your team handles upgrades between OpenSign releases, monitors the containers and database, rotates secrets and responds to incidents, and this work recurs for the life of the system. Estimate it as named roles and hours per month, and compare it against the vendor-managed effort you no longer carry on the signNow side.
Optional outside support
External support, implementation and security testing are optional one-time or recurring spend. Implementation is usually a fixed scope agreed in writing before work starts, while upgrades and continuous testing are typically retainers. When you request a quote from any provider, ask for the deliverables, the named responsibilities, the hours assumed and what happens when the scope changes.
How a move from signNow to OpenSign runs at a high level
This sequence moves signing workflows, templates and signer records from signNow to a self-hosted OpenSign instance with a persistent database, and ends with a cut-over that keeps in-flight documents and completion records accounted for.
Inventory templates, workflows and signer populations
List every active signNow template, the signing workflows that use it, the number of signers per document and whether signers are internal staff or outside parties such as customers and vendors. Note which workflows need sequential signing, which need guest verification by email one-time passcode, and which rely on fields or merge data that must be rebuilt. The output is a written inventory signed off by the document owners, so you know what OpenSign must reproduce before any build work starts.
Decide what stays in signNow
Separate documents that are already out for signature from those that are not yet sent. For in-flight envelopes, decide whether to let them finish in signNow, reissue them in OpenSign, or cancel and resend with a clear message to the signer. Confirm with legal and records owners which agreements must remain in signNow for the retention period and where their completed copies will be kept. The output is a short disposition list that names an owner for each open document.
Deploy OpenSign with a persistent MongoDB
Have your platform team deploy OpenSign in your own infrastructure using the Docker method in the project README. The README warns that the default MongoDB in the Docker deployment is not persistent and is cleared on every restart unless you supply your own MongoDB connection URL, so point OpenSign at a managed or self-run MongoDB with backups, access control and TLS configured before any signer uses it. Confirm that restarts keep data, that TLS and secrets follow your standards, and that a restore has been tested. The output is a running instance whose data survives a container restart.
Rebuild templates and email templates
Recreate each inventoried template as a reusable PDF template in OpenSign, placing signature, date and text fields and naming them to match the old signNow template. Then rebuild the customizable email templates so invitations, reminders and completion messages carry your organization's wording and the correct sender details. Have the document owner check each rebuilt template against a copy of the original. The output is a template set with a signed-off checklist that maps each old template to its new counterpart.
Run a pilot with sequential and guest-OTP workflows
Pick a small set of internal and external test signers and run representative documents through the rebuilt templates. Cover at least one sequential multi-signer flow, where the order of signing matters, and one flow where an outside signer verifies by email one-time passcode. Check the activity log entries, including timestamps, IP addresses and signer contact details, and confirm the completion certificate is generated when the document finishes. Also test rejection with a reason and document expiry. The output is a pilot log showing each workflow completed or a documented defect to fix.
Export signed documents and completion records from signNow
Export completed agreements, their audit history and any completion certificates from signNow before access is removed. The steps and effort for bulk export are covered on a separate page, and the effort depends on how many documents and templates you hold and how they are grouped. Store the exports in your own records system with an index that maps each signNow document to its reference. Confirm that the exported files open correctly and that the index reconciles with the inventory. The output is a verified archive with a reconciled index.
Cut over and retire old links
Switch the sending process, integrations and API calls from signNow to OpenSign, and update any internal pages, contract templates or customer emails that link to signNow signing URLs. Confirm with the API owner that the OpenSign API integration works for each production use case. Then disable new sends in signNow, track the in-flight documents to completion, and close the account when the disposition list is empty. The output is a dated cut-over record and a list of retired links with their replacements.
Questions buyers ask before switching from signNow to OpenSign
What does switching from signNow to OpenSign cost?
The cost is driven by the work around the software, not by the license, because OpenSign is licensed under AGPL-3 and its source is free to use. The main cost components are the infrastructure to run it (a Linux host or cloud instance, a persistent MongoDB database, backups and TLS), the staff time to deploy, configure and operate it, the migration of templates and signed records, and any outside implementation help. Recurring costs are hosting, backups, patching and upgrades. One-time costs are deployment, template rebuilding, testing and staff training. Ask any vendor for a written scope that separates these items, and compare it with your current signNow plan and invite volume.
How long does a signNow to OpenSign migration take?
The timeline depends on how many templates you rebuild, how many signed records you need to move or keep accessible, how many signing workflows integrate with other systems through the API, and how much internal review the cutover requires. OpenSign's self-hosting path is a Docker deployment that uses a docker-compose.yml, a Caddyfile and an environment file, so the installation itself is usually the shortest step. Plan time for a persistent MongoDB configuration, testing of sequential and guest-signer flows, and a parallel-run period. Ask your implementation partner for a timeline tied to your specific template count and integrations.
Can our team implement OpenSign ourselves?
A team with Docker, Linux, reverse proxy and database experience can install OpenSign from its README, which documents one-line install commands and lists Docker and git as prerequisites. The harder parts are operational: setting up a persistent MongoDB connection URL, because the default MongoDB instance in the Docker deployment is not persistent and is cleared on every restart, configuring email delivery for signing invitations, backups, upgrades and access control. If your team has no one who runs containers in production, budget for outside help on those items. Confirm the current setup steps against the release you plan to deploy.
What do our internal staff need to contribute?
Internal staff need to own decisions that only your organization can make: who may send and sign documents, which templates are official, retention periods, how guest signers are identified, and who approves changes to the signing workflow. Technically, you need someone to own the server or cluster, the MongoDB database, backups and restore tests, and the mail relay. Legal or compliance staff should review the completion certificate and the audit trail content against your evidence requirements. Your IT team should also plan for monitoring and patching of the platform after go-live.
Is OpenSign's completion certificate enough for our legal requirements?
OpenSign records activity logs with timestamps, IP addresses and signer email addresses or phone numbers, and generates a completion certificate when a document is finished, but whether that evidence meets your legal needs is a question for your counsel. Under the ESIGN Act, an electronic signature may not be denied legal effect solely because it is electronic, yet the Act excludes records such as wills, codicils, testamentary trusts, certain family law records, most of the Uniform Commercial Code, and court documents. In the EU, eIDAS distinguishes simple, advanced and qualified signatures, and OpenSign's documented features do not by themselves establish a qualified signature. Confirm the evidence standard for each document type with counsel before cutover.
Does the AGPL-3 license affect internal use or modifications?
OpenSign is licensed under AGPL-3, and for internal use inside your organization, running the software does not by itself require you to publish your code. The AGPL's source-sharing obligations apply when you modify the program and make it available to users over a network, so a custom change that your staff serve to outside users, such as a customer-facing signing portal, can trigger obligations to offer that modified source. Have your legal team review the license terms against your planned use, especially if you customize the signing interface or offer it to partners or customers.
When should we bring in an implementation partner?
Bring in an implementation partner when the switch involves production dependencies you cannot test internally, such as API integrations with an HR or contract system, a multi-signer approval process with compliance evidence needs, or a persistent database and backup design that must meet your recovery targets. DeployOpen plans, implements, customizes, integrates, hardens, backs up, upgrades and documents self-hosted open-source platforms inside your own infrastructure, and most engagements are fixed-scope with scope and deliverables agreed in writing before work starts. DeployOpen also prepares systems and evidence for compliance assessments but does not issue audit reports or certifications. Ask for a written scope before deciding.
What support does OpenSign need after go-live?
After go-live, the platform needs regular upgrades, security patches for its runtime and dependencies, tested backups of the MongoDB data and of the document files, monitoring, and a support route for incidents. OpenSign's GitHub releases page shows the version history, and v2.41.3 was the latest release when read in October 2026, so confirm the current release before you plan upgrades. Ongoing support, upgrades and continuous testing can be arranged as a DeployOpen retainer, or handled in-house, and the choice should be written into the operating model before cutover.
When signNow stays the right choice
Keeping signNow is the sounder decision for some teams, and a move to OpenSign is not required for every organization. The strongest case for staying is operational: OpenSign is a stateful service, and the team has to own it. Its README warns that the default MongoDB instance in the Docker deployment is not persistent and is cleared on every restart unless you supply your own MongoDB connection URL. If nobody on the team can operate a MongoDB cluster, manage backups and restores, patch the Docker host and keep a Caddy front end current, the hidden cost of self-hosting will likely exceed the subscription you are leaving. Be honest with yourself about that capacity before you start.
Vendor-run uptime and support are the second reason to stay. With signNow, the provider carries availability, incident response and product upgrades. With OpenSign, those duties move to your team, and no vendor contract stands behind the signing service unless you buy one from a third party. If your signing workflows sit on a critical path, such as closing deals or onboarding regulated customers, and your leadership expects a contractual uptime commitment, ask signNow for its current service terms in writing and compare them with what your own on-call rota can deliver. Confirm the terms with the vendor directly, because plans and terms change.
The third reason is feature dependence. Before you commit to a move, list the signNow features your team actually uses, such as particular field types, approval routing, payment collection, or integrations with systems you already run. Then test each one against OpenSign in a non-production instance. The supplied facts confirm drawn, uploaded, typed and saved signatures, sequential signing, guest OTP, templates, completion certificates and an API, but they do not establish parity for every signNow feature. If a workflow depends on something you have not verified in OpenSign, keep signNow for that workflow until the gap is closed or accepted.
How DeployOpen helps evaluate, implement or migrate OpenSign
DeployOpen plans, implements, hardens, backs up and documents self-hosted open-source platforms inside your own cloud accounts, data centers or air-gapped networks. For signNow vs OpenSign, we start from your signing workflows, signer population and record-keeping obligations, then decide with you whether OpenSign fits or another self-hosted option is the better match.
How we scope
- We inventory which signing workflows, templates and signer groups move off signNow and which must stay.
- We confirm whether sequential signing, guest OTP verification and completion certificates meet your record requirements.
- We agree the MongoDB persistence design, backup approach and hosting target in writing before any work starts.
How we build
- We deploy OpenSign with Docker in your environment, replacing the default non-persistent MongoDB with your own connection URL.
- We configure reusable PDF templates, email templates, signer routing and API integration against your systems.
- We test signing paths, expiry, rejection handling and certificate output, and document the results for your review.
How we hand over
- You receive configuration records, runbooks for restart, backup and upgrade, and a record of the controls you own.
- We document how to export existing signed documents and audit history from signNow into the new environment.
- We prepare evidence for your compliance assessors, though independent auditors and certification bodies issue any audit reports.
How we support
- Engagements are fixed-scope, with scope, deliverables and timelines agreed in writing before work begins.
- Ongoing support, upgrades and continuous testing are available as a retainer after handover.
- A quote follows from the written scope, and we ask you to confirm hosting, database and backup requirements first.
