cat-catch

Camofox Browser is an open-source anti-detection headless browser server for AI agents, built by the team behind jo and powered by Camoufox, a Firefox fork that applies fingerprint spoofing at the C++ level. It exposes browser automation through a REST API with accessibility snapshots, stable element references for clicking and typing, navigation and search macros, screenshots, downloads, file uploads, structured extraction, YouTube transcript extraction, and OpenAPI documentation. Browser contexts provide isolated cookies and storage, with optional persistence, cookie import, proxy and GeoIP configuration, VNC-based interactive login, and Playwright session tracing. It can run from npm, Docker, Fly.io, or Railway, and supports lazy browser startup and idle shutdown. The repository is licensed under MIT.

Catch2 is an open-source, C++-native unit testing framework for unit tests, test-driven development (TDD), and behavior-driven development (BDD). It uses readable test names, assertions written as ordinary C++ boolean expressions, and sections for localized sharing of setup and teardown code. It also provides simple BDD macros and basic microbenchmarking; benchmarks are opt-in rather than run by default. Catch2 v3 is distributed as a normal library with multiple headers and separately compiled implementation, while the v2.x branch provides the previous major version and C++11 support.

OCR It is a Chrome and Firefox browser extension for extracting text from paginated document viewers, including scanned books, slide decks, PDFs, and embedded readers where text selection is unavailable. Users select a screen region, capture it with a hotkey, and append the locally generated OCR result to an ordered transcript; an automatic mode captures each page, advances the viewer, and stops when text repeats, paging fails, OCR fails, or a page limit is reached. OCR runs offline through a bundled Tesseract build without outbound requests, API calls, or image uploads. The extension crops, optionally enlarges, and converts the visible region to grayscale, queues OCR jobs serially, stores page text and verification thumbnails, flags consecutive duplicate pages, and exports the transcript as copied text or a TXT file with page separators. Page turning can use a picked screen point or keyboard event, including controls inside supported frames and shadow roots. It uses narrowly scoped browser permissions, relying on activeTab for single captures and requesting an additional site grant for automatic runs that persist across page loads or turn pages inside cross-origin iframes.

Tailcat is an open-source Go CLI and library from Tailscale that provides Netcat-style connections over Tailscale's encrypted data plane without using the Tailscale control plane or requiring a Tailscale account. A server generates a connection token containing WireGuard and relay metadata; a client uses the token to establish an end-to-end encrypted tunnel, initially through a DERP relay, while magicsock attempts NAT traversal and a direct peer-to-peer UDP connection. Its userspace networking stack does not alter routing tables, DNS settings, or require root access. The CLI can pipe standard input and output between machines, forward local TCP ports, provide an unauthenticated SSH server, run commands through a SOCKS5 proxy, act as an exit node, ping and inspect connection tokens, and publish tokens through DNS TXT records. The Go library exposes server and client APIs for dialing TCP ports through the tunnel. Tailcat can use Tailscale's public rate-limited DERP relays or user-operated relays, and an experimental WebAssembly browser demo supports file and text transfer. The project states that its CLI, API, and wire format have no stability guarantees.