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ossu
computer-science
HTML2015–2025
ossu / computer-science

computer-science

🎓 Path to a free self-taught education in Computer Science!

Learning & ReferenceScience & Engineering
Explore on GitHubRead Hacker News discussions
81Distinct people
92Mentions
1Explicit recommenders
211KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

🎓 Path to a free self-taught education in Computer Science!

GitHub

Where it is used

  • Active Courses University (ACU) — Active Courses University uses the OSSU/computer-science curriculum to organize its categories and channels, mapping topics and course-specific channels to OSSU’s structure. Source

What people are saying

Whenever i have someone ask me where to get started on CS - i give them a few options tiered to try and ensure some stickiness/higher utility for them specifically. ~Some…

seven4 used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 8:59:20 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year92 dated mentions

Observed mentions: 2015-10-04 02:17:57 UTC to 2025-09-21 10:29:23 UTC.

0510152015-01-01 00:00:00 UTC to 2016-01-01 00:00:00 UTC (exclusive): 7 mentions; 7 submissions, 0 comments20152016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 7 mentions; 3 submissions, 4 comments2017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 17 mentions; 5 submissions, 12 comments2018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 5 mentions; 0 submissions, 5 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 11 mentions; 1 submissions, 10 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 10 mentions; 2 submissions, 8 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 12 mentions; 3 submissions, 9 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 4 mentions; 1 submissions, 3 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 11 mentions; 1 submissions, 10 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 6 mentions; 0 submissions, 6 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments2025

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20152015-01-01 00:00:00 UTC2016-01-01 00:00:00 UTC770
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC734
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC17512
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC505
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC11110
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC1028
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC1239
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC413
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC11110
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC606
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC211

What Hacker News says

5 sources
westurner·Feb 22, 2018
These aren't courses, but from answers to "Ask HN: Recommended course/website/book to learn data structure and algorithms" : Data Structure: https://en.wikipedia.org/wiki/Data_structure Algorithm:https://en.wikipedia.org/wiki/Algorithm Big O notation:https://en.wikipedia.org/wiki/Big_O_notation Big-O Cheatsheet: http://bigocheatsheet.com Coding Interview University > Data Structures: https://github.com/jwasham/coding-interview-university/blob/... OSSU: Open Source Society University > Core CS > Core Theory > "Algorithms: Design and Analysis, Part I" [&2] https://github.com/ossu/computer-science/blob/master/README.... "Algorithms, 4th Edition" (2011; Sedgewick, Wayne): https://algs4.cs.princeton.edu/ Complexity Zoo > Petting Zoo (P, NP,): https://complexityzoo.uwaterloo.ca/Petting_Zoo While perusing awesome-awesomeness [1], I found awesome
Read the rest
-algorithms [2] , algovis [3], and awesome-big-o [4]. [1] https://github.com/bayandin/awesome-awesomeness [2] https://github.com/tayllan/awesome-algorithms [3] https://github.com/enjalot/algovis [4] https://github.com/okulbilisim/awesome-big-o
In Ask HN: What's the best algorithms and data structures online course?
westurner·Jan 18, 2018
Data Structure: https://en.wikipedia.org/wiki/Data_structure Algorithm: https://en.wikipedia.org/wiki/Algorithm Big O notation: https://en.wikipedia.org/wiki/Big_O_notation Big-O Cheatsheet: http://bigocheatsheet.com Coding Interview University > Data Structures: https://github.com/jwasham/coding-interview-university/blob/... OSSU: Open Source Society University > Core CS > Core Theory > "Algorithms: Design and Analysis, Part I" [&2] https://github.com/ossu/computer-science/blob/master/README.... "Algorithms, 4th Edition" (2011; Sedgewick, Wayne): https://algs4.cs.princeton.edu/
In Ask HN: Recommended course/website/book to learn data structure and algorithms

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