Reactive Playground vs Linea Agents

Reactive Playground is a visual learning app for reactive programming. Instead of reading operator definitions only, you can play with marble timelines directly. Pick a category, open an operator, move events around, edit their values, clone items, remove them, or turn them into errors and completed events. The output updates live so you can understand what each operator really does. Explore operator categories such as: Transforming Filtering Combining Error Handling Utility Each playground shows a source timeline, an output timeline, a short explanation, and a code-style example. It is useful for learning ReactiveX concepts, reviewing operators, or quickly refreshing how a stream behaves before using it in code. Reactive Playground is made for developers, students, and anyone learning Rx-style reactive programming.

Linea puts your Mac's coding agents in your pocket. Pair with your Mac running Linea, then watch and steer every terminal and AI agent from your phone — live. See what each agent is doing, read its plan and diffs, approve or deny its actions, and reply when it needs you. Start new agents or shells, resume past sessions, and jump between projects — all over a private, direct connection to your own Mac. WHAT YOU CAN DO • Live agent conversations — follow tool calls, plans, and diffs as they happen • Warp-style terminal blocks — run commands and read the output • Approve, deny, or answer your agents from anywhere • Start new agents (Claude Code, Codex, and more), shells, or git worktrees • Search your history and resume past sessions • Instant Home from a cached snapshot, even before the link reconnects PRIVATE BY DESIGN Linea connects peer-to-peer straight to your Mac — your code and conversations never touch our servers. No account required. Requires the Linea app on your Mac. New here? Tap "Explore a demo" to try the whole app on sample data — no Mac needed.