Users debate whether Aircad's low price and small-team structure pose unacceptable risks for professional CAD work, with the developer arguing that client-side execution and standard export formats mitigate vendor lock-in. Competing opinions suggest the tool is either too risky for business-critical drafting or well-suited for hobbyists who value open standards over subscription models.
42 readable replies · Supporting reply 1 · Supporting reply 2 · Supporting reply 3 · Supporting reply 4Open-Cascade-SAS
OCCT
C++2022–2026
Open-Cascade-SAS / OCCT
OCCT
OCCT is an open-source software development platform for 3D CAD, CAM, CAE.
4Distinct people
4Mentions
0Explicit recommenders
3.2KGitHub stars
What to know before exploring
What it is
OCCT is an open-source software development platform for 3D CAD, CAM, CAE.
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
No recommendation phrase was found in the indexed comments.
Critical One commenter notes that the repository still generates invalid solids. Another comment references an issue regarding incomplete fillet and chamfer handling.
A warning from this week’s discussion. Read the supporting reply
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Critical
One commenter notes that the repository still generates invalid solids. Another comment references an issue regarding incomplete fillet and chamfer handling.
Supporting reply 1 · Supporting reply 2 · 1 discussions summarized
Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 8:03:49 PM UTC.
Mentions over time
HN mentions by year4 dated mentions
Observed mentions: 2022-02-07 12:32:07 UTC to 2026-08-30 18:49:39 UTC.
* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 1 | 1 | 0 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2026 (partial) | 2026-01-01 00:00:00 UTC | 2027-01-01 00:00:00 UTC | 2 | 1 | 1 |
What Hacker News says
1 sources_B_benj·Feb 7, 2022Submission
Open Cascade (OCCT) – Open-Source Geometric Modeling Kernel
1 points · Open discussion