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Replay historical markets across charts and depth-of-market views

Research options in a browser or build on licensed historical datasets

Connect bank checkout to customer authorization and verified payment status

Crypto conversion with wallet delivery and separate business integrations

Collect Indonesian payments and send approved business disbursements

A distributed, memory-first SQL database for applications that need shared cluster state.

A browser editor for micro:bit projects with Blocks, JavaScript, Python, and a device simulator.

A fantasy console with a compact Lua coding environment and built-in sprite, map, sound, and music editors.

Summarize files, code, comments, and blank lines across a project by programming language.

A macOS programming editor that runs and debugs code in many languages from one desktop app.

Check whether independently developed services agree on the HTTP and message contracts they use.

Choose payment links, ready-made checkout or direct payment integration

Search public trading disclosures and compare the dates behind them

The Dart SDK supplies libraries and command-line tools for Dart web, server, and command-line apps.

Query and deliver institutional pricing and reference data

Measure product use and connect allowances with customer billing

Edit code on macOS with project search, multiple carets, bundles, and version-control actions.

A cross-platform TeX editor that keeps source editing and PDF preview in one typesetting workspace.

A source editor for LilyPond scores with music view, MIDI playback and score-building tools.

A Windows source-code editor with syntax highlighting, tabbed files, and search across documents.

Research and backtest quantitative strategies in notebooks and code

Small interactive coding challenges

Set measured colour targets and recalibration for supported ColorEdge monitors.

Free Mac interaction prototyping with visual patches and device inputs