Spindle 2.0
Crush your AP CSP exam with our free comprehensive tools
Spindle 2.0 launched on August 4, 2025 with 16 votes, #761 of 8,530 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Level up your AP Computer Science prep! Get access to practice questions, coding environments, study guides, and real-time feedback to help you master concepts and excel on the exam. We're the all-in-one platform for AP CSP success, opensource & free-forever!
An integrated learning platform with built-in IDE, comprehensive documentation, and exam prep resources designed for students, teachers, and self-learners.
Spindle is the leading platform for AP Computer Science Principles students, teachers, parents, and self-learners. It helps you unlock your potential with real coding, instant feedback, and comprehensive resources like flashcards and games. Unlock your AP CSP potential with Spindle without paywalls or confusion, just results. # Spindle: Where AP CSP code comes alive! PROCEDURE greet(name) { DISPLAY("Hello, " + name + "!") } greet("World") View Study Resources View Articles Explore Docs Explore Spindle's Four IDEs text_fields Text IDE Write and run code in a traditional text editor, just like the AP CSP exam. Drag and drop blocks to build programs visually—perfect for beginners and visual…from spdl.netlify.app
Does a similar job
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Computer Science Field Guide2016 · csfieldguide.org.nz · ▲64Online interactive resource for students to learn about CS
- YFYour Free CS Education2015 · ▲15
Cut to the chase: https://www.youtube.com/watch?v=4nyzl3pVXp4 I really am a big supporter of quality education being available for everyone, and because of that I've opted to open source my CS education on YouTube. I'm starting with Rails, and I will eventually work around to more core CS topics like circuits -> logic gates -> binary -> assembly -> c -> Data Structures -> Algorithms etc. If you like it subscribe and I'm looking for all the feedback I can get on how to make it better :)
- IBI built a quizlet clone in 2 hours2022 · ▲10
Quizlet, a popular tool among high schoolers and college students used to study for tests recently made it's core functionality paid. In an era where Autodesk, Adobe, and Microsoft hold their proprietary software to their chests, it's exciting to see opensource alternatives come to compete with them. I'm 15, and I'm excited to do my part to keep education free for everyone. https://openlearn.vercel.app
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Source: Product Hunt launch ↗
Launched alongside, August 2025
the whole month →
I built the world's most impractical 1000-pixel display and anyone in the world can draw on it. It draws a single pixel at a time and takes 30-60 minutes to complete a single image. Anyone can participate in the project by voting for the next image to be drawn, and submitting images. https://kilopx.com/
Work · 2025 · benholmen.com
Kitten TTS is an open-source series of tiny and expressive text-to-speech models for on-device applications. We are excited to launch a preview of our smallest model, which is less than 25 MB. This model has 15M parameters. This release supports English text-to-speech applications in eight voices: four male and four female. The model is quantized to int8 + fp16, and it uses onnx for runtime. The model is designed to run literally anywhere eg. raspberry pi, low-end smartphones, wearables, browsers etc. No GPU required! We're releasing this to give early users a sense of the latency and voices…
AI · 2025 · github.com
I was wondering how I can arrange objects along a spherical helix path, and read some articles on it. I ended up learning about parametric equations again, and make this visualization to document what I learned: https://visualrambling.space/moving-objects-in-3d/ feel free to visit and let me know what you think!
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