Claude Code is one of the most capable AI coding agents available today, but it ships with three deliberate gaps: no persistent memory across sessions, no way to sync prompts across tools like Cursor or VS Code, and no native mobile client. A growing ecosystem of independent tools has emerged to fill exactly these gaps — Open Chronicle for session memory, Prompt Sync for cross-tool prompts, and Happy Coder or Grass for mobile access and multi-session management. This post maps the ecosystem so you can match each tool to the friction it actually solves. TL;DR If you're running Claude Code seriously, the official platforms and integrations page tells you what Anthropic ships — which isn't much beyond the core agent. The community has been moving faster.…