Documenso
Top pickOpen-source signing with real cryptographic signatures and no envelope cap.
91
sovereigntyDocumenso is the credible open answer: digitally signed PDFs using proper certificates, a complete audit trail, templates, and an API — self-hosted, with no per-envelope charge of any kind. AGPL-3.0, around 14k stars, and unusually transparent about how its signing works, which matters in a category where 'legally binding' is often asserted rather than explained. For a company sending straightforward agreements at volume, it removes both the seat cost and the envelope cap in one move.
OPEN SOURCEAGPL-3.0SELF-HOSTLOCAL-FIRST
LicenseAGPL-3.0
PricingFree and open source to self-host, with no envelope limits. Documenso Cloud is paid.
Open sourceYes
Self-hostableYes
Local-first dataYes
What it does well
- +No envelope cap — the constraint that drives most DocuSign overage bills
- +Real cryptographic signing with a full audit trail
- +Self-hosted, so contracts never leave your infrastructure
- +Open and specific about how its signing actually works
Where it falls short
- −AGPL-3.0 needs reading before embedding it in a product
- −Fewer integrations than DocuSign's ecosystem
- −Younger, with a shorter legal track record
- −Advanced routing and conditional logic are thinner
Documenso as an alternative to
Where Documenso shows up in our comparisons, and how it ranked.
Documenso head-to-head
Straight comparisons against the tools people weigh it against.