Specifiction
For vendors
AdvertiseTop spots, featured rows, home sponsor Get listedAdd a product we don't cover yet Claim a listingFree: verify the domain, then correct your page Vendor dashboardNumbers, orders and placements
List your tool
Vendor dashboard
Tech riderRev. 4 Oct 2026

DMOJ

Ch 097.1of 33 Automated Grading Software
  1. 1Runs onAPI, Linux, self-hosted, Web, Windows
  2. 2CostsFree plan
  3. 3Programming autogradingYes
3 lines stated Written from the maker's own pages: dmoj.ca
Visit site Alternatives

Overview

DMOJ is ranked #9 of 33 in automated grading software on Specifiction. It runs on API, Linux, Self-hosted, Web, Windows. There is a free plan.

DMOJ plans and pricing

All plans
Public contest hosting Free Public contests hosted on DMOJ dmoj.ca · 4 Oct 2026
Private contest hosting Not published For educational organizations; small fee, amount not stated dmoj.ca · 4 Oct 2026

Compared on automated grading software

Programming autograding
Yesdmoj.ca

Facts

Purpose
DMOJ is a modern contest platform and archive of programming problems, and is entirely open source.dmoj.ca · 4 Oct 2026
Problem archive
The site hosts problems from past CCC, CCO, COCI, IOI, and JOI competitions, as well as other sources.dmoj.ca · 4 Oct 2026
Contests
DMOJ runs the DMOJ Monthly Open Programming Competition for people interested in competitive programming.dmoj.ca · 4 Oct 2026
Judging
The platform supports interactive and signature-graded tasks, runtime data generators, custom output validators, per-language resource limits, and scaling to hundreds of judging servers.github.com · 4 Oct 2026
Contest formats
The contest system supports ICPC, IOI, AtCoder, and ECOO formats, along with system testing, hidden scoreboards, and virtual participation.github.com · 4 Oct 2026
Plagiarism integration
The contest system integrates with Stanford MOSS for plagiarism checking.github.com · 4 Oct 2026
Problem statements
Problem statements support Markdown, LaTeX math and figures, syntax highlighting, PDF generation, and built-in editorials.github.com · 4 Oct 2026
Authentication and access
The platform supports OAuth login with Google, Facebook, and GitHub, two-factor authentication, and fine-grained staff permissions.github.com · 4 Oct 2026
Security reporting
DMOJ asks researchers to send potential security issues privately for responsible disclosure before making them public.dmoj.ca · 4 Oct 2026
Support
The site asks users with questions about hosting contests to contact a moderator.dmoj.ca · 4 Oct 2026
Self-hosting
The maker provides documentation for installing the DMOJ site and judge.github.com · 4 Oct 2026
Self-hosting requirement
The installation guide says the site is tested to work with MySQL and is unlikely to work with other databases.github.com · 4 Oct 2026
Use restrictions
DMOJ says AI use is prohibited in rated contests and use of its judging resources for AI training is prohibited.dmoj.ca · 4 Oct 2026
Audience
DMOJ offers free public contest hosting and says educational organizations can contact it about hosting private contests for a small fee.dmoj.ca · 4 Oct 2026

Best DMOJ alternatives

See all 20
All accessCh 01 Wayground (formerly Quizizz) Free planFree trialAndroid from $18/mo8.1 All accessCh 02 PrairieLearn Free planFree trialAPI from $0.25/mo8.0 All accessCh 03 Socrative Free planFree trialAndroid from $10/mo7.7 All accessCh 04 Gradescope Free planFree trialAndroid Free to start7.6 All accessCh 05 MATLAB Grader Free planLinuxMac Free to start7.6 All accessCh 06 ClassMarker Free trialAndroidAPI 7.3

Where it ranks on Specifiction

Is DMOJ yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote DMOJ

Sources