SmallTalk is a minimal, modern, friends and family focused Android messenger. Heavily inspired by Whatsapp and Signal, powered by Matrix.
- Tiny app size - currently 1.72mb~ when provided via app bundle.
- Focused on reliability and stability.
- Bare-bones feature set.
- Login with username/password (home servers must serve
${domain}.well-known/matrix/client) - Combined Room and DM interface
- End to end encryption
- Message bubbles, supporting text, replies and edits
- Push notifications (DMs always notify, Rooms notify once)
- Importing of E2E room keys from Element clients
- Device verification (technically supported but has no UI)
- Invitations (technically supported but has no UI)
- Room history
- Message media
- Cross signing
- Google drive backups
- Markdown subset (bold, italic, blocks)
- Changing user name/avatar
- Room settings and information
- Exporting E2E room keys
- Local search
- Registration
- Built on Jetpack compose and kotlin multiplatform libraries ktor and sqldelight (although the project is not currently setup to be multiplatform until needed).
- Greenfield matrix SDK implementation, focus on separation, testability and parallelisation.
- Heavily optimised build script, clean cacheless builds are sub 10 seconds with a warmed up gradle daemon.
- Avoids code generation where possible in favour of build speed, this mainly means manual DI.
- A pure kotlin test harness to allow for critical flow assertions Smoke Tests, currently Linux x86-64 only.