Tech stack
9 projects use Kotlin.
Private messenger with end-to-end encrypted messaging and calls
Signal is a free, nonprofit messenger with end-to-end encrypted texts, calls, and group chats across Android, iOS, and desktop.
WireGuard-based zero-trust remote access with self-hosted gateways
Firezone is a WireGuard-based zero-trust access platform that pairs a managed portal with gateways on your own infrastructure.
Localisation platform with in-context translation editing
Tolgee's distinguishing feature is that translators work in the running application. Alt-click a string in the app and the editor opens over it, with surrounding context visible, which removes most of the ambiguity that produces bad translations from a spreadsheet.
Open-source Android app for tracking TV shows and movies
SeriesGuide is an open-source Android app that tracks TV shows and movies, syncing watched history with Trakt and listing data from TMDb.
Open-source tracker for TV shows and movies with Trakt sync
Showly is an open-source tracking app for TV shows and movies that manages watch progress, collections, and watchlists synced with a Trakt.tv account.
Offline-first, privacy-respecting navigation for hike, bike, and drive.
CoMaps is a community-led offline navigation app for hiking, biking, driving, and city transit.
Open-source chat and AI-agent SDKs for web and mobile apps
Ethora is an open-source chat and AI-agent platform with SDKs that add messaging, chatbots, and RAG search to web and mobile apps.
Semantic data gateway unifying APIs, databases, and streams
Orbital is a semantic data gateway that connects APIs, databases, and event streams so teams can query governed business data without writing glue code.