TanStack Agency Type-safe React apps
We build web apps, portals and admin interfaces with TanStack – the same stack our own CMS, next-cms, runs on.
Running on TanStack at nextlevels
next-cms
Our CMS framework: admin on Router, Query, Table and Virtual
NEXT Orbit
Our CRM, built on next-cms
Kumho Tire App
React Native app, content via TanStack Query
- downloads per week
- 177M
- GitHub stars
- 129,000+
- licence, no paid tiers
- MIT
Figures from tanstack.com, as of 4 October 2026.
What TanStack is – in two minutes
TanStack doesn't replace React. It's a family of open-source libraries for the jobs React deliberately leaves open: loading server data and keeping it fresh, typing routes and URLs, making large tables and lists usable, validating forms. TanStack Start adds a full-stack framework, available as a release candidate for version 1 since September 2025.
As a decision-maker, three properties matter. The libraries are headless: they bring logic, not a finished look – your design stays yours. They are typed in TypeScript throughout, so the compiler points to every affected spot when you refactor. And they are MIT-licensed, with no paid tiers.
Whether Start or Next.js suits your project is covered further down. For a full overview of every library, read our blog article What is TanStack? (in German).
The TanStack ecosystem
tanstack.com lists 18 libraries. These cover most real-world projects, sorted by the layer they work in. Pick a library for details. We state the maturity the way TanStack labels it – as of 2 October 2026.
Interface
What your users see and operate
TanStack Table
Headless table logic: sort, filter, group, paginate, select rows. Markup and design come from you, the mechanics come from Table.
Stable, v9 since 08/2026 · with us: data tables in the next-cms admin (v8)
TanStack Virtual
Renders only the rows currently in view, so long lists and tables stay smooth to scroll even with a great many entries.
Stable, v3 · with us: data tables in the next-cms admin
TanStack Form
Type-safe forms with validation in the browser and on the server – strong for multi-step forms and configurators where fields depend on each other.
Stable, v1 · v2 in alpha since 08/2026
TanStack Hotkeys
Brings typed keyboard shortcuts to the interface.
Alpha · with us: next-cms admin
TanStack Pacer
Controls how often functions run – debounce, throttle, rate limits, for example in search fields.
Beta
Tables and forms read and change data through Query
Data & state
What the browser knows and caches
TanStack Query
Loads, caches and updates server data: background refresh, retries on failure, targeted refetching after changes. Works with any data source that returns a promise – REST, GraphQL or tRPC.
Stable, v5 · with us: next-cms, Kumho app, this website
TanStack DB
A reactive client-side data store built on Query that also persists offline since version 0.6.
Beta · for prototypes, not yet our default
TanStack Store
The lean state container many TanStack libraries build on internally – Table v9, for one, keeps its state in it.
Alpha · used internally by Table v9
Query loads through Start's server functions or plain fetch
Routing & server
How pages, URLs and data arrive
TanStack Router
Routing with fully typed paths and search parameters. Filters, sorting and page numbers live validated in the URL – shareable by link, and the compiler knows every route.
Stable, v1 · with us: next-cms admin
TanStack Start
Full-stack framework built on Router: server-side rendering with streaming, prerendering and server functions that connect browser and server type-safely. Runs on Node, Bun, Vercel, Netlify and Cloudflare, among others.
Release candidate since 09/2025 · with us: client websites with SSR and prerendering
Server functions and loaders talk to your backend
Your backend
Not TanStack: REST, GraphQL, tRPC or the database directly. For next-cms it is a NestJS backend.
100,000 rows, live in your browser
This is what TanStack Table with Virtual feels like – the same combination that runs the data tables in the next-cms admin. Sort a column or search for a customer: your browser measures the timings itself, and the “In the DOM” counter shows how few rows are actually drawn.
Made-up order data, generated, sorted and filtered entirely in your browser.
Start or Next.js?
We build with both – this website runs on Next.js. Answer five questions about your project and see which way it leans, and why. The weighting follows our decision table below.
Question 1 of 5
What are you planning?
All trade-offs as a table – including Query or SWR, Table or AG Grid
When TanStack Start – and when Next.js?
We work with both; this website, for instance, runs on Next.js. The project decides, not taste. This is how we weigh it – for Query and Table too:
| Decision | Lean towards TanStack | Lean towards the alternative |
|---|---|---|
| Start or Next.js: type of project | Start, if you're building an app with lots of interaction – portal, dashboard, configurator – where filters and state should live typed in the URL. | Next.js, if a content-driven site or shop is at the centre, React Server Components give the biggest lever and you need many ready-made integrations for CMS, commerce and login. |
| Start or Next.js: team and maturity | Start, if your team wants explicit data flows instead of framework conventions and can live with a younger ecosystem – Start is still a release candidate. | Next.js, if the team already knows Next.js, the product has to run for years with changing developers and you want the widest choice of examples and talent. |
| Start or Next.js: hosting | Start, if you want to stay free when hosting: Node, Bun, Vercel, Netlify, Cloudflare Workers and more targets are documented. We host on Coolify ourselves. | Next.js, if you host on Vercel anyway and want its platform features. Self-hosted, Next.js runs too, with somewhat more operational effort. |
| Query or SWR | Query, if there's a lot of writing and you need targeted invalidation, pagination, cancellable requests or offline cases. | SWR, if the app mostly reads and caching with revalidation is enough – then the smaller library will do. |
| Query or RTK Query | Query, if Redux is only left for server data. With Query, Redux often goes away entirely. | RTK Query, if the app uses Redux Toolkit heavily anyway – then the built-in solution is more consistent than a second library. |
| Table or AG Grid | Table, if you have your own design system and want full control over markup and accessibility, without licence fees. | AG Grid, if you need Excel-like grids with ready-made features such as pivoting or range selection and features matter more than your own design. AG Grid charges licence fees for these enterprise features. |
As of 2 October 2026, maturity as stated on tanstack.com. The table doesn't replace an architecture decision – we make that with you on the actual project.
From our projects
next-cms and NEXT Orbit
next-cms is our own full-stack CMS framework: a NestJS backend and a React admin interface on TanStack Router and Query. Its data tables run on Table and Virtual, keyboard shortcuts on Hotkeys. NEXT Orbit, our CRM for clients, projects, monitoring and forms, is built on next-cms as well.
Kumho Tire Europe app
The Kumho Tire Europe app is built with Expo and React Native. TanStack Query loads the content from the new next-cms backend and keeps it cached between app launches – data is there as soon as the app opens and refreshes in the background.
This website and client websites
next-levels.de loads its data via tRPC and TanStack Query. For several clients we have built websites on TanStack Start, with server-side rendering or prerendering depending on the page – among them a comparison portal, the relaunch of a workshop's website focused on enquiries, and a campaign landing page. The names stay anonymous here.
What we build for you with TanStack
Bookable individually or as a project. And if another stack fits better, we tell you up front.
New builds with Start
Web apps and portals on TanStack Start: typed routes, server functions instead of a separate API layer for the frontend, SSR or prerendering per page.
Migration to Query and Start
Hand-written fetch code, Redux or SWR move to Query module by module. Where it makes sense, we move Next.js or Create React App projects to Start step by step. The app stays shippable throughout.
Admin interfaces and large tables
Data tables with filtering, sorting and pagination on Table and Virtual – the same combination that runs in the next-cms admin.
Forms and configurators
Multi-step forms and product configurators with TanStack Form: validation in the browser and on the server, prices and availability live via Query.
Code review and architecture workshop
We look at your codebase – query keys, cache rules, routing, data flows – and you get a prioritised list of what's worth doing and what isn't.
Maintenance and security updates
We keep dependencies current and act on security advisories. Example: on 30 September 2026, TanStack closed a critical XSS vulnerability in Start's server functions (CVE-2026-102989, fixed from @tanstack/react-start 1.168.60). We roll out updates like this tested.
How a project runs
What a project costs and how long it takes depends on its scope. Our project calculator gives you a first range; the quote after the workshop makes it binding.
Initial call
You describe the goal, users and existing systems. We tell you straight away whether TanStack fits or whether Next.js or an off-the-shelf solution is the better route.
Architecture workshop
We define the data model, routes, cache rules and hosting and slice the scope into packages. That becomes the quote.
Build in iterations
We deliver in short steps to a staging environment, so you see every state. Types, tests and code review are part of every step.
Launch and operations
We deploy the app to your infrastructure or set up Coolify on your own servers. Afterwards we look after updates and monitoring if you want.
Frequently asked questions about TanStack
Your question isn't here? Ask us directly
What is TanStack?
TanStack is a family of open-source libraries for web apps: Query loads and caches server data, Router types routes and URLs, Table and Virtual keep large tables usable, Form validates forms. Start is the full-stack framework on top and has been a release candidate since September 2025. All libraries are headless and MIT-licensed.
Is TanStack Start production-ready?
Formally, Start is a release candidate: TanStack published the RC for version 1 on 23 September 2025 and described it as the build expected to ship as 1.0. Breaking changes have been documented since. We already run Start in production for several client websites – with pinned versions, tests and updates by changelog. For a large product that many teams will work on for years, we check with you whether Next.js is the calmer choice (as of 2 October 2026).
How good is TanStack Start for SEO?
Start renders pages on the server, with streaming if you like, or generates them as static HTML at build time. Search engines and AI crawlers get finished HTML instead of an empty page full of JavaScript. We set meta tags, structured data and sitemaps per route. We only recommend pure single-page apps without server rendering for areas behind a login.
Can an existing app be migrated step by step?
Yes. We introduce Query endpoint by endpoint without touching the rest. When moving from Next.js or Create React App to Start, we move a clearly bounded area first, such as the customer portal, and run old and new side by side via routing. The app stays shippable in every phase.
Who is behind TanStack – and is that a risk?
TanStack is run independently by TanStack LLC around founder Tanner Linsley and funded through partnerships, including Vercel, Netlify, Cloudflare and Sentry. According to tanstack.com, the packages see around 177 million downloads a week and more than 129,000 GitHub stars (as of 2 October 2026). The bigger risk is pace: new major versions such as Table v9 ship regularly, so updates belong in every maintenance plan.
What does a TanStack project cost?
It depends on the scope: number of areas and user roles, interfaces to existing systems, data volumes and requirements for tables and forms. Our project calculator gives you a first range; you get a binding quote after the architecture workshop. The smallest way in is a code review of your existing app.
Sources
As of October 2026
Read on and check
Project calculator
A first cost range for your project in a few minutes.
Web applications
Our service for portals and internal applications.
Ready for your TanStack project?
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