Software · Development

L8W8JWT GUI

Graphical user interface for encoding, decoding, signing and verifying JWTs.

Completely free
Linux
Open source

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by Flathub
License: Apache-2.0 — Open source (permissive)confirmed by Flathub
Open source: Yes
Commercial use: Yesconfirmed by Flathub
Account required: not documented
Credit card required: Noconfirmed by Flathub
Watermark: Not applicable
Ads: not documented
Platforms: LinuxEstablished by Linux: Flathub
Publisher: Glitched Polygons
Latest version: 1.0.5 (9 October 2026)
Latest activity: 12 October 2026
Source code: codeberg.org/GlitchedPolygons/l8w8jwtgui

At a glance

All of L8W8JWT GUI is free: no feature is locked behind a paid plan, and its code is open.

Its licence (Apache-2.0) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

Open source code
Commercial use allowed

About

L8W8JWT GUI is a graphical interface around l8w8jwt, a minimal and open-source JSON Web Token library written in C. It is handy during development and when testing or implementing web services that deal with auth tokens. Features include: Encoding and signing tokens with the HS, RS, PS, ES and EdDSA algorithm families Setting standard claims such as issuer, subject, audience and expiry, plus custom claims Decoding tokens and verifying their signature and timestamps Generating RSA, ECDSA and Ed25519 key pairs, with extra entropy collected from your mouse Fully offline: the app has no network access

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 9 November 2026
Last technical check: 9 November 2026
Description from Flathub — AppStream (Flathub)

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