Formable suits teams that need contract drafting, review, negotiation, and signing in a browser.
Free plan From $0.35 one-time AndroidiPhone & iPadWebAPI
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Best Redlining Software 2026
Facts read 21 Sep 2026 – 15 Oct 2026
Redlining software helps teams compare document versions, mark changes and manage contract review. This list helps legal, procurement and operations buyers compare tools by pricing, platform support and review features.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 Formable | Formable suits teams that need contract drafting, review, negotiation, and signing in a browser. | 5.5 | $0.35 one-time | Free plan | Android, iPhone & iPad, Web, API | 15 Oct 2026 |
| 02 Gavel | Gavel suits transactional attorneys, law firms, and legal teams needing contract work or document workflows. | 5.1 | $417 a year | Free trial | Web, Windows, Mac, API | 29 Sep 2026 |
| 03 LegalSifter | ReviewPro suits CFOs, COOs, and operations leaders handling contract work. | 4.8 | $3,500 a year | Free trial | Web | 2 Oct 2026 |
| 04 Robin AI | Robin AI suits legal teams and businesses handling contract review, obligations, legal research, or contract repositories. | 4.5 | Free plan | Free plan | Web, Browser extension | 4 Oct 2026 |
| 05 BlackBoiler | It suits in-house legal teams, law firms, contract managers, and construction legal, commercial, procurement, and project teams. | 4.4 | $1,250 a year | Free trial | Web, API | 8 Oct 2026 |
| 06 Draftable Compare | 4.4 | — | Free trial | Windows, Self-hosted | 30 Sep 2026 | |
| 07 PDiff | 4.1 | — | Free trial | Windows, Mac, Self-hosted | 7 Oct 2026 | |
| 08 Docgility | 3.9 | — | Free trial | Web, API, Self-hosted | 29 Sep 2026 | |
| 09 Spellbook | Spellbook is designed for in-house legal teams and law firms handling contract review, drafting, research, and matter work. | 3.9 | — | Free trial | Web, Windows, Mac, Browser extension | 30 Sep 2026 |
| 10 LegalOn | It is built for contract managers and in-house legal professionals, from solo general counsels to small teams at growth-stage companies. | 3.7 | — | Free trial | Web, Browser extension | 30 Sep 2026 |
The page orders releases by newest availability, using figures makers publish rather than a score. Check free plans, trials, Word and PDF support, collaboration, AI review, clause libraries, approvals and audit logs.
02
Gavel
Gavel suits transactional attorneys, law firms, and legal teams needing contract work or document workflows.
WebWindowsMac+1 Record5.1 Visit
03
LegalSifter
ReviewPro suits CFOs, COOs, and operations leaders handling contract work.
Web Record4.8 Visit
04
Robin AI
Robin AI suits legal teams and businesses handling contract review, obligations, legal research, or contract repositories.
WebBrowser extension Record4.5 Visit
05
BlackBoiler
It suits in-house legal teams, law firms, contract managers, and construction legal, commercial, procurement, and project teams.
WebAPI Record4.4 Visit
9
Spellbook
WebWindowsMac+2 — Record3.9 Visit Spellbook is designed for in-house legal teams and law firms handling contract review, drafting, research, and matter work.
10
LegalOn
WebBrowser extension — Record3.7 Visit It is built for contract managers and in-house legal professionals, from solo general counsels to small teams at growth-stage companies.
11
eBrevia
WebAPISelf-hosted — Record3.6 Visit eBrevia is aimed at law firms, corporations, audit and consulting companies, and financial institutions working with contract sets.
Before you choose
Start with plan terms
A free plan is available from tools on this list, while other products use paid plans or pricing on request. Compare the starting price with user limits and the work your team needs.
Trials vary by product. Listed examples include five-, seven-, 14- and 30-day trials. Confirm the trial terms before moving documents into a paid workflow.
Match the way you work
Tools on this list run across web, API, Windows, macOS, self-hosted setups and browser extensions. Pick the access model that fits your document systems and security process.
An API or self-hosted option can suit teams that need software integration or local control. A web tool can fit browser-based review.
Check Word and PDF handling
Compare Microsoft Word integration with PDF redlining. These functions can matter when reviewers switch between editable contracts and fixed-format files.
Confirm how a tool shows changed text, comments and accepted edits before choosing a workflow.
Plan collaboration and approvals
Real-time collaboration can help reviewers work in one document session. Approval workflows can route a draft through required sign-offs.
Look for an audit log when you need a record of document activity and decisions.
Review AI and clause tools
AI review assistance can support contract checks, while a clause library can help organize preferred language. Compare how these features fit your review rules.
Ask how suggested changes are presented and how library content is maintained before relying on them in a legal process.
Questions
Is free redlining software available?
Yes. Formable lists a free plan. Other tools on this list use paid plans or provide pricing on request.
Do redlining tools offer free trials?
Several listed tools publish trials, including five-, seven-, 14- and 30-day terms. Trial availability differs by product.
Which platforms can redlining software use?
Platforms represented on this list include web, API, Windows, macOS, self-hosted software and browser extensions.
Can these tools compare Microsoft Word files?
Microsoft Word integration is a comparison field for this list. Check the product details for the Word workflow that fits your documents.
Do redlining tools support PDF files?
PDF redlining is a comparison field on this list. Confirm the product's PDF behavior before selecting it.
What collaboration controls should I compare?
Compare real-time collaboration, approval workflows and audit logs. These fields show how a tool may support shared review and recordkeeping.
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