The best Retool alternatives, compared honestly
Retool is still the fastest way to put a real UI on top of a Postgres table, and its connector library and permissions model remain ahead of most of the field. What sends teams looking is the seat maths: Retool's pricing page defines an internal user as someone who did not build or edit an app, and charges EUR 14 per month for them on Business. Adoption, not usage, is what grows the invoice. This page compares seven alternatives on that exact axis: who each one counts as a billable person, and what its free self-hosted edition really caps.
The best Retool alternative depends on what's actually hurting:
- Paying for people who only look → Appsmith: Apache-2.0, self-hosts with no cap on builders, viewers or apps.
- Scripts and workflows, not screens → Windmill: unlimited executions on every plan, including the free one.
- Zero per-person billing anywhere → Lowcoder: bills per instance ($169) or per API call ($0.001), explicitly not per user.
- Hundreds of read-only viewers → UI Bakery: unlimited public app users on every tier, free self-hosted seats.
Why teams look elsewhere
What pushes teams off Retool
Retool did not get worse at building internal tools; it got more expensive to let people use them. Four patterns recur in migration write-ups, and all four are visible on Retool's own pricing page rather than in anyone's opinion.
Viewers are seats
Retool's pricing page defines an internal user as an "enabled user who did not build or edit an app or workflow during the billing cycle" and bills them at EUR 5/month on Team and EUR 14/month on Business. Rolling an ops tool out to the wider team is a line item.
Three meters, one product
Builders, internal users and external users are priced separately, with external users on their own volume tiers (free to 50, then EUR 7.33, EUR 5.41 and EUR 3.60). Forecasting the bill means forecasting three headcounts, not one.
Workflow runs are capped
Free stops at 500 workflow runs/month and both Team and Business stop at 5,000. Teams that start using Retool for scheduled jobs hit that ceiling long before they hit a seat ceiling, and the fix is Enterprise pricing.
The Business jump
The step from Team to Business is EUR 9 to EUR 46 per builder, roughly five times, and it is where SSO-grade governance and audit features live. Small teams that need one Business-only feature pay the multiple across every builder.
The shortlist
7 Retool alternatives worth evaluating
The category splits into two jobs that Retool bundles: putting a UI on a database, and running the scripts and schedules behind it. This ranking optimises for the first job with the second available, and it weights the billing unit heavily, because that is what teams actually left over. Every pick lists one honest strength and one real weakness.
Apache-2.0, the most permissive licence in this list, and the self-hosted community edition has no cap on builders, viewers or apps. Roughly 40,000 GitHub stars and a connector library close enough to Retool's that most apps map one to one. Weakness: on their cloud, "a user is any member that has been added to a workspace", so Business at $15/user/month repeats exactly the viewer problem you left, and Enterprise is quoted at $2,500/month for 100 users.
If your Retool usage skewed to workflows and cron rather than screens, this is the closer fit: executions are unlimited on every plan including the free one, so the 5,000-run ceiling disappears. Weakness: the free self-hosted edition caps 3 workspaces, 50 users and only 10 users with SSO, and Enterprise adds a second meter in compute units on top of $20 developer and $10 operator seats.
GPL-3.0, and the self-hosted open-source edition is explicit about unlimited apps, automations and users. The builder is the friendliest in the list for people who are not full-time engineers. Weakness: the cloud plans reintroduce both meters, with creators at $50/month each beyond the included one and end users at $5/month, plus a separate actions quota per tier.
The only tool here that does not price people at all: Enterprise is $169 per instance, or usage-based at $0.001 per API call, with managed instances at $149/month and clusters at $499/month. That makes an app used by thousands of external users predictable rather than terrifying. Weakness: the smallest community of the open-source options, so you will be reading source more often than docs.
Bills per developer seat only ($20/month annually on Builder, $35 on Team), public app users are unlimited on every plan, and there is a free self-hosted tier with unlimited seats. The cleanest answer if your problem is purely the viewer meter. Weakness: proprietary, so there is no source to fall back on, and workspace viewer seats are capped at 50 below Enterprise.
AGPL-3.0, about 37,000 GitHub stars, and the editor most Retool users find familiar on day one. Weakness: the free edition is the most restrictive here and self-hosting does not lift it, stopping at 2 builders, 50 end users and 2 apps; the first paid step is $79/builder/month and Team is $199, so ToolJet can cost more per builder than the Retool plan you are leaving.
Prices the team rather than the person: $100/month annually covers up to 15 builders, with agent usage metered in Governed Agent Units and hybrid or Cloud-Prem deployment options. Weakness: there is no free self-hosted edition, every deployment model needs a subscription, and extra hosted apps are $10 each per month, so it is the one pick here you cannot evaluate for nothing.
Deliberately excluded: no-code builders aimed at non-engineers (Airtable, Glide, Bubble), which serve a different buyer, and database-first tools (Directus, NocoDB, Baserow), where the app layer is secondary to the data layer.
Side by side
Retool alternatives compared
Prices as of August 2026, from each vendor's own pricing page, in the currency that page publishes. The column that decides most migrations is "Bills by": everything else is a feature argument you can win either way, but the billing unit is what makes the invoice grow with adoption instead of with usage. Retool's own row is included as the baseline.
| Tool | Bills by | Free self-hosted caps | Licence | Cheapest paid tier | Best for |
|---|---|---|---|---|---|
| Retool | Builders and internal viewers and external users | ✗ plan gating applies when self-hosted | ✗ proprietary | EUR 9/builder + EUR 5/viewer per month | Teams where nearly everyone builds |
| Appsmith | Workspace members (cloud only) | ✓ none: unlimited users and apps | ✓ Apache-2.0 | $15/user/month | A like-for-like replacement you self-host |
| Windmill | Developer and operator seats, plus compute units | ✓ 3 workspaces, 50 users, 10 SSO users | ✓ open core, commercial licence for Enterprise | From $120/month | Workflows, scripts and cron |
| Budibase | Creators and end users (cloud only) | ✓ 1 workspace, users unlimited | ✓ GPL-3.0 | $19/month | Fast internal CRUD apps |
| Lowcoder | Instances or API calls, never users | ✓ community edition, no published cap | ✓ open source | $169/instance or $0.001/API call | Customer-facing apps at volume |
| UI Bakery | Developer seats only | ✓ free tier, unlimited seats | ✗ proprietary | $20/developer/month annually | Many viewers, few builders |
| ToolJet | Builders, with end-user ceilings per plan | ✗ 2 builders, 50 end users, 2 apps | ✓ AGPL-3.0 | $79/builder/month | Familiar editor, small builder teams |
| Superblocks | The team, plus Governed Agent Units | ✗ no free self-hosted edition | ✗ proprietary | $100/month annually, up to 15 builders | Agent-driven enterprise builds |
Retool's Business tier is EUR 46/builder plus EUR 14/internal user per month; its external-user tiers run free to 50 users, then EUR 7.33, EUR 5.41 and EUR 3.60 per month as volume rises. Retool's pricing page serves regional currency, and the figures above were read in euros on 13 August 2026. Pricing and free tiers change often; check each vendor for current terms. Compiled August 2026.
Official pages: Retool · Appsmith · Windmill · Budibase · Lowcoder · UI Bakery · ToolJet · Superblocks
A fair call
When Retool is still the right choice
Migrating costs a rebuild: none of these tools import Retool apps, so every screen is re-created by hand. Two engineers moving a dozen apps is realistically a sprint, and that is before anyone re-checks permissions. For a certain shape of team, the seat maths that pushes everyone else out is actually cheaper.
Retool is still right if…
- Nearly everyone who touches your internal tools also builds them. With 5 builders and no passive viewers, Team costs EUR 45/month, which is less than one ToolJet Pro builder seat and less than Superblocks' floor.
- You need a connector that only Retool ships, or a permissions model your auditors have already signed off on.
- Your apps are read-mostly against a warehouse and the workflow ceiling is nowhere near 5,000 runs a month.
- You have no one to own a self-hosted deployment. A saved seat that costs a day of ops time a month is not a saving.
Look elsewhere if…
- Most of your paid seats never open the editor: Appsmith self-hosted, or UI Bakery if you want it managed.
- You keep hitting 5,000 workflow runs: Windmill, where executions are unlimited on every plan.
- The app is going to external users in the thousands: Lowcoder, which bills the instance or the API call.
- Legal needs the source under an OSI-approved licence: Appsmith (Apache-2.0) or Budibase (GPL-3.0).
Common questions
Common questions about Retool alternatives
What is the best Retool alternative in 2026?
Appsmith is the best general replacement. Its community edition is Apache-2.0 and self-hosts with no cap on builders, viewers or apps, which removes the meter that sends most teams looking in the first place. If your internal tooling is mostly scripts, cron jobs and workflows rather than screens, Windmill fits better. If you want to stop paying per person entirely, Lowcoder bills per instance or per API call and not per user at all.
Why do teams leave Retool?
Almost always the seat maths rather than the product. Retool's pricing page defines a builder as an enabled user who built or edited an app during the billing cycle and an internal user as one who did not, and it charges for both. On Business that is EUR 46 per builder and EUR 14 per internal user per month, so a team of 3 builders and 20 colleagues who only open the apps pays EUR 418 per month, with EUR 280 of that buying read access. The bill grows with adoption, not with usage.
How much does Retool cost in 2026?
Retool's own pricing page, read on 13 August 2026 and served in euros, lists Free at EUR 0, Team at EUR 9 per builder plus EUR 5 per internal user per month, Business at EUR 46 per builder plus EUR 14 per internal user per month, and Enterprise as custom. External users are tiered: free up to 50, then EUR 7.33, EUR 5.41 and EUR 3.60 per month as volume rises. Workflow runs are capped at 500 per month on Free and 5,000 on Team and Business.
Is there a truly open-source Retool alternative?
Yes, and the licences differ in ways that matter. Appsmith is Apache-2.0, Budibase is GPL-3.0 and ToolJet is AGPL-3.0. All three are OSI-approved, but AGPL-3.0 carries network-use obligations that some legal teams will not accept for a modified internal deployment. Lowcoder publishes both its community and enterprise editions as open source. Windmill's core is open source while the enterprise features need a commercial licence, so the free edition is not the same product.
Does self-hosting make these tools free?
Not by itself, and this is the trap. ToolJet's community edition caps you at 2 builders, 50 end users and 2 apps whether you self-host or not. Windmill's free edition allows 3 workspaces, 50 users and only 10 users with SSO. Budibase's open-source edition is unlimited on users but gives you 1 workspace. Superblocks has no free self-hosted edition at all. Appsmith and UI Bakery are the two that let you run unlimited seats on your own hardware for nothing.
Can I migrate off Retool without rebuilding every app?
Expect to rebuild the screens. None of these tools import Retool apps, because each stores its UI in its own format and each has its own component set and query model. What does move cheaply is everything underneath: database credentials, REST and GraphQL connections, and any real logic you kept in SQL or in your own services rather than in JavaScript inside the editor. Port the two or three highest-traffic apps first, run both tools in parallel for a billing cycle, then cut the Retool seats.