Open Source

BlazePDF is a desktop PDF reader built for studying. It gives students one calm workspace for lecture slides, readings, textbook chapters, research papers, and past papers, so they can read, annotate, organize, and print in one app. The app works offline and needs no account for the desktop reader. Files stay on the student's computer, and reading, annotating, searching, and exporting all happen locally. Key Features Annotation tools include pen and marker strokes, word-aware highlights, text boxes, shapes, arrows, lines, and images. Tool presets restore your preferred color, width, and opacity with a single shortcut. Flow Mode supports keyboard-first annotation, so you can keep working without reaching for the mouse. Page tools add blank pages, import images, reorder pages, and export the edited PDF. Smart Duplex prepares two-sided printing for printers that need a manual second pass, with reload instructions. Poster Enlargement turns one large diagram into tiled sheets and previews how the pieces fit together. Who Should Use BlazePDF Students working through a full semester of slides, readings, and past papers. Revision-focused learners who highlight, search, and revisit key passages before exams. Anyone printing oversized study material, such as large diagrams that need tiling or two-sided booklets. Frequently Asked Questions What is BlazePDF? BlazePDF is a desktop PDF reader made for students, by students. It combines reading, annotating, organizing, searching, and printing in one offline workspace. Is BlazePDF free for students? The site offers a free download for students. Current plan options are listed on the download and plans page. Do I need an account to use BlazePDF? No. The desktop reader needs no account. Optional account and AI OCR features start only when you choose them. Is my document content private? Yes. Reading, annotating, searching native PDF text, and exporting happen locally on your desktop. BlazePDF does not use document content to train generalized AI models.

Made to code hard without feeling heavyClawie is built around a real terminal workspace, but the page now stays focused on what matters most: coding quality, easy flow, local power, and fast response.

FPVtune is a free, web-based automatic PID tuning tool for FPV drones. Every FPV pilot knows the pain of manual PID tuning — hours of test flights, analyzing blackbox logs, tweaking values, and repeating the cycle. FPVtune eliminates this tedious process entirely. Simply upload your Betaflight blackbox log file, and FPVtune analyzes your gyro data to identify noise patterns, oscillations, and filter performance. Within minutes, you get optimized PID and filter settings tailored to your specific quad setup. Works with all types of FPV builds including freestyle quads, racing drones, cinewhoops, and tiny whoops. Compatible with Betaflight and INAV flight controllers. Fix oscillations, reduce propwash, and achieve a locked-in feel without being a tuning expert. FPVtune is open source and completely free to use. No installation required — everything runs in your browser at fpvtune.com.