Privacy-first • Open-source • Built for learning
A calm, ad-free search & study ecosystem for students
crescent is a privacy-first, open-source search engine and study ecosystem designed specifically for students.
It replaces noisy, ad-driven search engines with a calm learning environment where students can:
- Research topics from trusted educational sources
- Take notes alongside results
- Organize study material
- Learn without being tracked, distracted, or profiled
No ads.
No accounts.
No data collection.
Just learning.
Modern search engines are optimized for:
- ads
- engagement
- profiling users
crescent is optimized for:
- understanding
- focus
- students
It is built to be safe for learners of all ages, including under 18, and to respect privacy by default.
- Wikipedia, Wikidata, OpenLibrary, NASA & more
- Unified results across multiple sources
- Instant references, summaries & facts
- Notes linked to searches
- Bookmarks & collections
- Topic-based research workspaces
- Highlight & annotate key information
- Math expression evaluation (MathJS)
- Science & astronomy datasets (NASA)
- Dictionary & vocabulary tools
- Weather & climate data
- Current events research
- API-friendly architecture
- Easy to add free educational sources
- Designed for student-built extensions
| API | What it provides |
|---|---|
| Wikipedia | Encyclopedia articles |
| Wikidata | Structured knowledge |
| OpenLibrary | Books & authors |
| NASA APIs | Science & space data |
| MathJS | Math evaluation |
| Dictionary APIs | Vocabulary |
| OpenWeatherMap | Climate data |
| News APIs | Current events |
crescent only uses free and open-access data sources.
- Students & self-learners
- Homework & assignments
- Research projects
- Exam revision
- Privacy-conscious users
You don’t need to be an expert to contribute.
Ways to help:
- Improve UI or accessibility
- Add a new educational API
- Fix bugs or performance issues
- Improve documentation
- Suggest features students actually need
All contributions are welcome ❤️
- No trackers
- No analytics
- No ads
- No accounts
- No dark patterns
crescent is designed to be safe, ethical, and student-friendly.
© 2025 CrescentDB
Licensed under the CrescentDB Supreme Protection License (CSPL) v3.3
If you believe students deserve better tools,
please consider starring this repository — it helps crescent reach more learners.
🌙