Buffer
Schedule and analyze social media posts across platforms.
Marketing
Oskyla
Oskyla
@user-ad6380f090
859 sitesJoined 2026/10/19
Mailchimp
Email marketing with templates and automation.
Marketing
Umami
Open-source, self-hostable privacy analytics.
Marketing
Plausible
Lightweight, privacy-friendly analytics without cookies.
Marketing
Semrush
All-in-one SEO, ads and content marketing toolkit.
Marketing
Ahrefs
SEO suite for backlinks, keywords and competitor research.
Marketing
Google Analytics
Free web analytics for traffic, conversions and audiences.
Marketing
Google Search Console
See how your site performs in Google Search and fix indexing issues.
Marketing
中国大学MOOC
Courses from top Chinese universities.
Learning
Desmos
Beautiful free graphing calculator for students and teachers.
Learning
Wolfram Alpha
Computational knowledge engine for maths, science and data.
Learning
Anki
Spaced-repetition flashcards for long-term memory.
Learning
Exercism
Practice 70+ programming languages with free mentoring.
Learning
Brilliant
Interactive problem-solving lessons in maths, science and CS.
Learning
edX
Courses from Harvard, MIT and other universities.
Learning
Bilibili 哔哩哔哩
Huge library of Chinese tutorials and open lectures.
Learning
Wikipedia
The free encyclopedia; the starting point for almost any topic.
Learning
MIT OpenCourseWare
Free MIT course materials, lectures and problem sets.
Learning
Duolingo
Gamified language learning that builds a daily habit.
Learning
freeCodeCamp
Learn to code with free interactive curriculum and certifications.
Learning
Coursera
University courses and certificates; audit many for free.
Learning
Khan Academy
Free world-class lessons in maths, science and more.
Learning
Gitee 码云
Chinese code hosting platform, fast access within China.
Development
roadmap.sh
Community learning roadmaps for every developer role.
Development