osTicketFree, open-source support ticketing system
vs
PlainThe AI support stack built for B2B
Comparison · Help Desk · weekly run Nov 3
osTicket vs Plain
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Plain is the stronger AI pick in Help Desk: it has a visibility score of 1.5 versus 0.3 for osTicket.
Choose osTicket if…
- AI answers describe it more positively (67% vs 20% positive)
- Recommended as a free, self-hosted helpdesk option
Choose Plain if…
- You want the brand AI engines rank higher (1.5 vs 0.3)
- You need SOC 2 Type II or HIPAA or GDPR coverage
- Recommended in B2B SaaS support shortlists
- Strong fit for modern, Slack-connected developer-centric support
AI visibility side by side
Latest weekly run · Nov 3
| Metric | osTicket | Plain |
|---|---|---|
| Visibility score | 0.3% | 1.5% |
| Change vs last week | down−0.6% | down−0.8% |
| Rank in Help Desk | #35 | #24 |
| Share of voice | 0.2% | 0.4% |
| Mentions this run | 1 | 2 |
| Positive in AI answers | 67% | 20% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
osTicket −0.6000000000000001pp · Plain −0.7999999999999998pp over 1 weekly runs.
Engine by engine
Plain leads on 3 of 3 engines
ChatGPT
AI Mode
Perplexity
osTicketPlain
Head to head in AI answers
0 engine answers name both brands
0osTicket ranked higher
0Plain ranked higher
Features, pricing & fit
| Dimension | osTicket | Plain |
|---|---|---|
| Pricing model | — | Per seat |
| Entry price | — | $45 per seat / mo |
| Free plan | — | No · 7-day trial |
| Deployment | Self-hosted (free download) or cloud-hosted via SupportSystem | Cloud (AWS eu-west-2, London) |
| Compliance | — | SOC 2 Type II, HIPAA, GDPR |
| Support | Mailing lists for upgrades and security patches, YouTube tutorials | Help Center, Dedicated customer success manager (Frontier), White glove onboarding (Frontier), Community |
| Founded | — | 2020 |
| Headquarters | Alexandria, Louisiana | London, United Kingdom |
| Employees | — | 11–50 |
| Funding | — | Series A · $21M raised |
| Best for | Small businesses wanting a free, customizable ticketing system they can host themselves | Fast-growing B2B and developer-tools companies that support customers in Slack, Teams, Discord and email |
Plans side by side
osTicket
Pricing not available.
Plain
Foundation$45user/month, billed annually
Horizon$99user/month, billed annually
FrontierCustomcustom, billed annually
Pros and cons
Themes from the AI answers that mention each brand
osTicket
- Recommended as a free, self-hosted helpdesk option
Plain
- Recommended in B2B SaaS support shortlists
- Strong fit for modern, Slack-connected developer-centric support
- Suited to B2B teams depending on customer interaction style
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 98.8%·next run
Cite as: SlateIndex, “osTicket vs Plain”, https://slateindex.ai/compare/osticket-vs-plain, data of Nov 3, 2026. Licence: CC BY 4.0.