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CTF platforms for universities and colleges, compared

Ten options a college can use for a capture the flag event or a semester lab, checked against what a department has to get past: hosting, cost per event, educator features, campus IT and procurement. CTF7 publishes this page and is one of the ten; it is marked as ours and not ranked.

Choosing a platform for a college event comes down to five questions: who runs the servers, what one event really costs in rupees, what faculty can do without vendor help, what your IT team has to allow, and whether your accounts office can pay for it. The table below scores ten real options against those five, using each vendor's own published pages as of October 2026.

Key takeaways

  • Decide what you are buying for. A semester lab and a 400-player fest weekend need different tools. Several options below are good at one and weak at the other.
  • Free software is not a free event. CTFd, RootTheBox and GZCTF cost nothing to license, but a student or staff member installs, scales and watches them on event day.
  • Published prices are rare. Of the hosted options here, CTF7, CTFd Cloud, US Cyber Range and Hack The Box publish enough to price a typical event without a sales call; TryHackMe publishes a "from" price.
  • Currency matters to accounts offices. Most vendors here bill in USD. Ask every vendor on your shortlist whether it can invoice the institute in INR.

Disclosure: CTF7 publishes this page and appears in the table as one of the ten, marked as ours. Competitor facts come from vendor pricing pages, docs and repositories, linked in the sources; it is desk research, not a hands-on test of each product. For what CTF7 specifically offers colleges, see CTF7 for universities.

Five criteria for a college CTF platform

Most buyer's guides stop at features and price. A college also has to get a platform past a head of department, an IT team and an accounts office. These five criteria cover all three.

1. Hosting model: who runs the servers?

There are three common models. Open-source scoreboards you host yourself are free to download, but someone installs them, scales them and stays on call while 300 students log in at the same minute. Quote-only vendors run events for you but price them case by case, which slows approval. Hosted platforms with published prices run the infrastructure and let you budget before the first call. Our guide to running a cyber lab without servers goes into the trade-off.

2. Cost per event, in rupees

Compare the cost of the event you are running, not the headline price. A monthly subscription bills at least a month even for a 24-hour competition. Per-seat training subscriptions grow with every student you add. Content-marketplace pricing adds challenge packs and per-day player fees on top. Run your own numbers in the cost calculator, and budget separately for writing challenges: someone has to.

3. Cohort and educator features

For coursework, ask what a faculty member can do without the vendor's help: add a class, track progress by category, give teaching assistants limited permissions, and export results for internal records. For events, ask about team sizes, mentors and judges, registration and fee collection. Ask to see these in a live walkthrough or a public demo, not on a slide.

4. IT requirements

Campus networks often block unusual ports and domains. Find out whether students need a VPN client, a local virtual machine or just a browser. Ask which domains your IT team should allowlist, and whether the platform works on lab machines with locked-down browsers. Send that list to IT two weeks before the event, not two hours.

5. Procurement and payment

Accounts offices want a vendor they can pay, an invoice in the institute's name and a clear scope. USD pricing means international card payments or wire transfers, which some institutions cannot easily make. Quote-only pricing means waiting for a quote before you can draft a purchase request. Education discounts and sponsored programs change the maths, so ask for them by name.

At a glance

Ten CTF platform options for colleges, compared

Public facts as of October 1, 2026, listed alphabetically. "Not public" means the vendor publishes no price and we didn't guess. Swipe sideways on mobile.

OptionHostingPublished priceBillingEducator featuresStudent device needs
CTF7 (our product)Hosted on every plan₹0 up to 50 players; ₹9,999 per event up to 500; Premium customINR, per event; monthly organization plansMentor and judge roles, scoreboard analytics, certificates; learning seats on organization plansBrowser
CTFd (self-hosted)You run itFree (Apache-2.0)None; you pay for serversAdmin panel, plugins, challenges as code with ctfcliBrowser
CTFd CloudHostedFrom $50/month billed annually; 80% education discountUSD, monthlySame software as self-hosted; extra challenge types from PlusBrowser
Cyber SkylineHostedNCL $45 per student per season; Lab Kit $1,000 to $2,000 for up to 50 students; hosted events by quoteUSDPer-player scouting reports; educator Lab KitBrowser, Chromebook-friendly
GZCTFYou run itFree (AGPLv3 core plus restricted components)None; you pay for serversPer-team containers built inBrowser
Hack The Box CTF MarketplaceHostedAbout $2,750 for 1 day, 100 players, 10 challenges, before VATUSD creditsReady-made content packs, reportingBrowser or VPN; Pwnbox add-on per user per day
HierroCTFManaged, full serviceNot publicIndian vendor; terms on requestVendor runs the event; scope on requestAsk vendor
RootTheBoxYou run itFree (Apache-2.0)None; you pay for serversGame mechanics suited to classroomsBrowser
Traboda ArenaHostedNot public; sponsored for educational institutionsIndian vendor; terms on requestContest, Practice and Classroom (beta) modesBrowser
TryHackMeHostedCTF Builder needs a Business or Education license; managed events from $5,000 for a one-day event, priced by lengthUSDGuided rooms, Education licenseBrowser (AttackBox) or VPN
US Cyber Range CloudCTFHosted$80/month for 100 players; $130 for 250USD, monthlyCourseware from $9 per user per monthBrowser

CTFd appears twice because the self-hosted and cloud options answer the hosting and billing questions differently. Every competitor cell is sourced below. CTF7 facts come from our pricing page.

Option by option: where each one fits a college

Open source you host: CTFd, RootTheBox, GZCTF

Right for a department with a student team or lab staff who already run Linux servers. CTFd is the most widely used of the three and has the largest plugin ecosystem. RootTheBox adds game mechanics that keep a classroom engaged. GZCTF builds in per-team containers, which matters for web and pwn challenges. The cost is people-time: installation, TLS, scaling for the opening minutes and someone on call. Our open-source platform comparison covers licenses, maintenance status and an event-day checklist.

CTFd Cloud

The same CTFd software, hosted for you, billed monthly in USD. The 80% education discount makes the smaller plans cheap for a college that qualifies, and CTFd's 2025 pricing post describes a sponsored self-hosted Enterprise license for free educational events in the US and EU only. A monthly plan suits a club that runs something every month better than a once-a-year fest. Details in CTF7 vs CTFd.

Hack The Box and TryHackMe

Both sell content as much as a platform. If nobody on campus can write challenges and the budget allows it, a professionally written pack removes the hardest part of running an event. The catch for most Indian colleges is price and currency: a one-day Hack The Box event starts at about $2,750, TryHackMe's managed events start at $5,000 for a one-day event, and TryHackMe's self-serve Builder needs a Business or Education license. See the Hack The Box comparison and the TryHackMe comparison.

US-focused education platforms: Cyber Skyline and US Cyber Range

Both publish prices and are built for schools. Cyber Skyline runs the National Cyber League for US and Canadian students and works on Chromebooks with no VM setup. US Cyber Range pairs a low-cost scoreboard with courseware. Both bill in USD and are designed around US procurement, which limits them for Indian institutions.

Indian vendors: Traboda Arena and HierroCTF

Traboda has run very large contests (it cites InCTF Junior with over 17,000 players) and says it sponsors the platform for educational institutions, though pricing isn't public and some modes are in beta. HierroCTF offers a full-service campus model in which the vendor runs the event; it also publishes no prices and has no self-serve organizer signup. Both are worth a call if you want someone else to run the whole event.

CTF7 (our product)

A hosted platform priced per event in rupees, with registration, fees and (on paid plans) certificates on the same platform as the scoreboard. A free jeopardy event is self-serve; Standard, a fixed price set up with our team in days, adds dynamic flags and anti-cheat. Attack-defense, King of the Hill and SOC simulation are managed events our team runs on request and quotes per event. Where it falls short: it is not open source, it has no public demo or self-serve docs site, and it has a smaller ecosystem than CTFd. The college-specific details (semester plans, faculty roles, the classroom kit) are on CTF7 for universities.

Questions to ask any vendor before you sign

  1. What is the total cost for our event: players, days, challenges, add-ons and taxes?
  2. Who is on call during the event, and how do we reach them at 2 a.m.?
  3. Which domains and ports does our IT team need to allowlist?
  4. Can faculty and teaching assistants have limited roles, separate from student organizers?
  5. How do we get results, rankings and certificates out after the event?
  6. Can you invoice the institute in rupees, and what payment routes do you accept?
  7. Do you offer an education discount or a sponsored program, and what proof do you need?
  8. What happens to our data, past events and accounts when the club's leadership changes?
  9. Can we see the organizer dashboard in a live walkthrough or a public demo, not just slides?

Copyable college platform checklist

Paste this into your proposal, a shared document or an email to your HOD, then fill it in for each vendor on your shortlist.

college-ctf-platform-checklist.txt
COLLEGE CTF PLATFORM CHECKLIST
Vendor: ____________

Purpose
[ ] Use case chosen: semester lab / fest CTF / national contest / assessment
[ ] Expected participants: ____   Event length: ____   Date: ____

Hosting and IT
[ ] Who runs the servers: vendor / our IT / student team
[ ] Works in a normal browser on lab machines (no VPN or local VM)
[ ] Domains to allowlist received and sent to IT 2 weeks before
[ ] Support contact reachable during the event

Cost
[ ] Total cost for this event confirmed, taxes included: ____
[ ] Currency: INR / USD   Education discount applied: Y / N
[ ] Participant cap covers our expected registrations
[ ] Challenge writing covered: students, faculty or the vendor

Educator needs
[ ] Faculty and TA roles with limited permissions
[ ] Live scoreboard and post-event results export
[ ] Certificates available
[ ] Rules, code of conduct and scoring published in advance

Anti-cheat (graded rounds)
[ ] Unique flags per team or another way to detect shared answers

Procurement
[ ] Invoice in the institute's name, payable the way our accounts office pays
[ ] Data and event ownership stay with the institute after leadership changes
[ ] Live demo of the organizer dashboard completed

Related: the full list of 30 platforms, the pitch your HOD guide and the guide to running a college event in India.

Sources

All checked on October 1, 2026. Prices change; check each vendor's site before you decide.

Planning a college event or course?

Start with a free event for up to 50 students, or talk to us about a fest-scale event and rupee invoicing.

Read how we protect accounts and event data on the security page, or contact us with questions.

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