XiaoOJ
时代的眼泪
Details
- External ID
- 1390969834
- Source
- GITHUB
- Company
- —
- Product
- XiaoOJ
- Website domain
- github.com
- Launched
- Sept. 27, 2026
- Cohort
- —
- Upvotes
- 8
- Upvotes percentile
- 0.14514476044068664
- Tags
- —
- Fetched at
- Oct. 1, 2026, 1:02 a.m.
- Updated at
- Oct. 1, 2026, 1:02 a.m.
Enrichment
- Theme
- niche developer utilities and guides
- Vertical
- Education
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- online judge system for programming practice
- Manually corrected
- False
Could you build this?
Partial Online Judge (OJ) systems have standard CRUD web portals, but implementing a secure, isolated sandbox to compile and execute arbitrary untrusted code with precise resource limits is difficult.
What it would actually take: The architecture needs a web frontend (e.g. Next.js), a queuing system (Redis/RabbitMQ), and a judge daemon executing inside Linux namespaces, cgroups v2, and seccomp filters. The hard part is building an unbreachable sandbox that accurately measures CPU time and memory down to the millisecond without allowing jailbreaks or denial of service attacks.
Competitors
Other products that read as similar to this one — 266 launches clear the similarity bar, closest 8 shown.
Attention rank: #233 of 267 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 329 days after the earliest competitor.
- Laodi · github · 2026-09-18 · 14 upvotes · similarity 0.54
- lattice · github · 2026-09-14 · 12 upvotes · similarity 0.53
- guoapp · github · 2026-09-26 · 8 upvotes · similarity 0.50
- guoapp · github · 2026-09-26 · 113 upvotes · similarity 0.50
- xiaohongshu-emotion-writer · github · 2026-09-12 · 6 upvotes · similarity 0.49
- ClimWorkflow · github · 2026-09-18 · 12 upvotes · similarity 0.49
- guoguo-juku · github · 2026-09-18 · 9 upvotes · similarity 0.49
- yingxian-pagoda · github · 2026-09-15 · 20 upvotes · similarity 0.47
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a dev tools tool for Sales yet.