Langflow
77 · StableVisual builder for AI agents and RAG workflows, with a Python API.
Open source AI app builders
Flowise
ArchivedDrag-and-drop builder for LLM agents and chatflows.
Source-available and unverified licenses
The code for these is public, but the license is not an OSI open source license, or we have not verified it yet. Check the license notes on each project before relying on it.
Dify
90 · HealthyPlatform for building LLM apps, agents and RAG pipelines with a visual workflow editor.
Directory / AI app builders / Dify
Dify
Platform for building LLM apps, agents and RAG pipelines with a visual workflow editor.
Will it still be around?
Health 90/100 · Healthy
Activity, bus factor and issue responsiveness. Breakdown
Can a business use it freely?
Custom license, not open source
Dify Open Source License (Apache-2.0 with added conditions). Details
Alternative to
Savings proposal
A 25-editor team on Voiceflow Pro pays about $1,254 a month. Self-hosting Dify costs about $576 a month to run plus $2,880 to set up, so it pays for itself in month 5 and saves about $21,528 over three years.
List price: Voiceflow Pro, billed annually. Pro is $54 a month with one editor; extra editors are $50 each. Usage (messages, tokens) is billed on top. Source, checked 2026-10-07.
Saved over 3 years
$21,528
Pays for itself
Month 5
Saved in year one
$5,256
Each month
$1,254 → $576
Show as a table
| Month | Voiceflow | Self-hosted | Difference |
|---|---|---|---|
| Today | $0 | $2,880 | −$2,880 |
| Month 3 | $3,762 | $4,608 | −$846 |
| Month 6 | $7,524 | $6,336 | $1,188 |
| Month 9 | $11,286 | $8,064 | $3,222 |
| Month 12 | $15,048 | $9,792 | $5,256 |
| Month 18 | $22,572 | $13,248 | $9,324 |
| Month 24 | $30,096 | $16,704 | $13,392 |
| Month 30 | $37,620 | $20,160 | $17,460 |
| Month 36 | $45,144 | $23,616 | $21,528 |
Assumptions you can change
Self-hosting Dify usually means several services (analytics store, queues, search). Hours are for one engineer; the server cost is a typical cloud VPS with backups and grows with the number of people using it.
Not included: paid editions or features of Dify (see What's free?), large data migrations, and compliance work. All amounts in US dollars at list price; your negotiated price may differ.
Health score: 90/100
Activity45% weight
100/100
- Last commit today (100/100).
- 6479 commits in the past 12 months (100/100).
- 26 releases in the past 12 months (100/100).
Bus factor30% weight
77/100
- Top contributor wrote 42% of the last 92 commits (past 12 months).
- 18 people authored those commits.
Responsiveness25% weight
88/100
- 98% of all issues are closed (466 open, 18805 closed) (100/100).
- 24 of 30 recent issues got a reply or were closed (80/100).
Score v2. How the health score works.
License
Dify Open Source License (Apache-2.0 with added conditions) · Custom license, not open source
You can't run it as a multi-tenant service (one tenant = one workspace) without written permission, or remove the Dify logo and copyright from the frontend. Contributors agree the license can be made stricter.
A license written by the vendor, often an open source license with extra conditions added. Not OSI-approved; read the terms before relying on it.
License text checked 2026-10-07: read it.
What's free?
Enterprise features many open-core projects keep for paid plans.
| Feature | Self-hosted, free? |
|---|---|
| SSO (SAML) | Unknown |
| SSO (OIDC) | Unknown |
| SCIM provisioning | Unknown |
| Audit logs | Unknown |
| Role-based access control | Unknown |
| Multi-tenancy | Unknown |
We haven't verified which of these features are free for this project yet.
GitHub metrics
| Stars | 158k | Forks | 25k |
|---|---|---|---|
| Last commit | today | Commits, 12 months | 6.5k |
| Releases, 12 months | 26 | Last release | 28 days ago |
| Contributors | 456 | Active authors | 18 in last 92 commits |
| Open issues | 466 | Closed issues | 19k |
Snapshot from 2026-10-08.