Open source Tella alternative

There are roughly 8-12 serious contenders in the open source documentation and evidence-gathering space (tools like Nextcloud, Cryptpad, and self-hosted solutions), but fewer than 3 are purpose-built to replace Tella's specific angle of mobile-first, encrypted documentation for journalists and human rights workers. The common failure pattern: most open source alternatives prioritize technical correctness over UX, shipping clunky interfaces that scare away non-technical users who actually need these tools in high-risk environments. The real gap isn't in the feature set—it's in the execution. Tella succeeds because it's designed for people under pressure, not engineers. An open source alternative that keeps Tella's obsessive focus on ease-of-use while adding community transparency and self-hosting options would own this space. The opportunity sits squarely with makers willing to invest in design polish, mobile-first development, and tight integration with existing privacy infrastructure (Signal, Tor, etc.). This isn't a crowded market yet because it requires both activism credibility and solid engineering—two things rarely found in the same team.