Appsmith vs Tessary
Appsmith and Tessary are both developer tools tools. Appsmith is aimed at developers, while Tessary is aimed at developers and small businesses. Both have a free plan.
Open-source internal tool builder
Open-source monitoring that finds why production AI agents fail
| Pricing | Open source · $15 | Open source |
| Starting price | $15/mo | Not published |
| Free plan | Yes | Yes |
| Free trial | 15 days | — |
| Built for | Developers | Developers, Small businesses, Enterprise |
| Platforms | web | web, linux |
| Country | IN · 2019 | — |
| Rating | — | — |
Choose Appsmith if
Teams wanting open-source internal tools.
- Open source and self-hostable
- Lower cost than Retool
- Git integration
Look elsewhere if: Teams prioritizing polish and component breadth (Retool).
Choose Tessary if
Engineering teams running AI agents in production with OpenTelemetry traces who want every trace checked and failures explained.
- Apache 2.0 open source with free self-hosting
- Checks every trace instead of a sampled subset
- RCA links failures to specific commits when a repo is connected
Look elsewhere if: Teams that want a mature, fully supported observability suite or an eval-first workflow (Datadog, Braintrust).
Appsmith vs Tessary pricing
Appsmith
- Free$0Up to 5 cloud users, 5 workspaces, 3 Git repos; open-source edition
- Business$15/user/moUp to 99 users, custom roles, audit logs, Git, 15-day trial
- Enterprise$2,500/mo100 users included; SAML/OIDC SSO, SCIM, SLAs
Tessary
- Open Source$0Self-host with Docker Compose; all core features
- Cloud Free$010k traces/mo, 1 GB, 30-day retention, $10 one-time RCA credit
- PaidCustomCustom classifiers, managed dedicated instance, Slack support
Appsmith · Key features
- Widget-based UI builder
- Connectors to databases and APIs
- JavaScript logic everywhere
- Git version control
- Workflows
- Self-hosting
Cons
- Fewer components than Retool
- UI less polished
- Self-hosting maintenance
Tessary · Key features
- Classifiers run on every production trace with no sampling
- Built-in checks for drift, tool errors, secret leaks and malformed output
- LLM triage groups real deviations into trackable cases
- Root-cause analysis over failing traces and your GitHub repository
- OTLP ingestion over HTTP and gRPC with OpenTelemetry gen_ai conventions
- PII redaction before traces are stored
Cons
- Very new project with a short track record
- Paid plan prices are not published
- Frustration classifier requires your own OpenRouter or TypeSafe key
Appsmith vs Tessary: FAQ
Do Appsmith and Tessary have a free plan?
Yes, both Appsmith and Tessary have a free plan; paid plans add more usage and features.
Which is better for small businesses, Appsmith or Tessary?
Tessary lists small businesses as a core audience, while Appsmith is aimed more at developers.