Alternatives

Products that do what Trexo PDF Signer does

PDF signing with PAdES, LTV and OCSP

1. 1
   open-pdf-sign▲105

   Open-source tool for digitally signing PDFs

   2022

2. 2OO
   OpenSign – Open source alternative to DocuSign▲545

   2023 · github.com

3. 3FM
   FalsiScan – Make it look like a PDF has been hand signed and scanned▲770

   2020 · gitlab.com

4. 4
   Documenso▲760

   The open source DocuSign alternative

   2023 · documenso.com

5. 5
   OpenSign™: Open Source DocuSign & more▲109

   Enterprise-Level Document Signing Goes Open-Source

   2023

6. 6
   Documenso 2.0.0▲451

   Enterprise-Grade Signature Infrastructure for Everyone

   Nov 2025

7. 7
   DottedSign▲110

   The e-signature solution for your business

   2019

8. 8
   PDFZero▲100

   Advanced PDF tools to make your job easier

   2019

9. 9
   OpenSigner▲100

   Open-source non-custodial wallet solution

   Nov 2025

10. 10
    PDFlastica▲9

    Sign PDFs offline with typed and drawn signatures

    Jul 2026 · garmahis.com

11. 11FA
    Fill and sign PDF from any website with a single line of code▲16

    2023 · simplepdf.github.io

12. 12OS
    Open-Source DocuSign Alternative▲16

    2023 · opensignlabs.com

13. 13
    PDF2MD▲51

    Convert your PDFs to markdown With AI OCR

    2024

14. 14
    Contractso ▲17

    The Modern Standard for E-Signatures.

    Jan 2026

15. 15
    Firma Total▲3

    Sign PDFs locally with visible signatures or PAdES

    Aug 2026 · firmatotal.chapalab.com

16. 16
    Sign PDF - Digital signature▲6

    Sign PDF documents with realistic hand-drawn signatures

    Mar 2026 · play.google.com

17. 17
    Sign PDF. Add real handwritten signature▲6

    The only PDF signing tool for adding real signature to PDF

    Jul 2026 · sign-pdf.online

18. 18
    Trevnoctilla▲2

    Free PDF editing — simple, fast, mobile-friendly.

    Nov 2025

19. 19
    SealItDone▲3

    Legally binding e-signatures for $2.99. No subscriptions.

    Jul 2026 · sealitdone.io

20. 20
    Formaloo Sign - eSignature forms & docs▲26

    Customize free contract templates with secure eSignatures

    2024

21. 21
    Qwiksi a CLI tool for adding your signature to a PDFs▲10

    A CLI tool for stamping a signature image onto a PDF - krisraven/qwiksi

    8d ago · github.com

22. 22
    Firmalo▲6

    Sign PDFs online free, no signup or watermark

    Jul 2026 · firmalo.io

23. 23
    EasyPDFSign▲1

    Free PDF tools for signing, editing, and managing documents

    6d ago · easypdfsign.com

24. 24
    PDF Filler▲3

    Fill & sign PDFs free — no upload, no account, no limits

    Jun 2026 · fillsignpdf.com

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