What is App Stack Builder?

App Stack Builder is a free AI-powered tool that helps founders and developers choose the right tech stack for their projects based on budget, app type, team size, and skill level.

What is the best tech stack for SaaS in 2026?

The best tech stack for SaaS in 2026 typically includes Next.js 16 for frontend, Supabase for database and auth, Vercel for hosting, Stripe for payments, and PostHog for analytics. App Stack Builder can generate a personalized recommendation based on your specific budget and requirements.

Is App Stack Builder free to use?

Yes, App Stack Builder is completely free to use. You can generate unlimited tech stack recommendations without any cost.

What types of apps can I build with the recommended stacks?

App Stack Builder supports various app types including SaaS applications, web apps, mobile apps, e-commerce stores, internal tools, and AI/ML products.

How much does a SaaS tech stack cost per month?

A modern SaaS tech stack can cost anywhere from $0-50/month for bootstrapped startups using free tiers, $100-300/month for growth-stage startups, to $500+/month for enterprise-ready infrastructure. App Stack Builder helps you find the best tools within your specific budget.

What is the best tech stack for solo founders?

For solo founders, we recommend Next.js + Vercel (free), Supabase (free tier), Supabase Auth (free), Stripe (pay as you go), and Plausible or PostHog for analytics. This stack can run your entire SaaS for under $50/month.

Can I export my tech stack recommendations?

Yes, you can export your tech stack recommendations as a PDF document or copy them to your clipboard. You can also share a link to your stack with others.

Celery vs Hatchet: Which is Better in 2026?

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Background Jobs & Workflows

Choosing between Celery and Hatchet? Both are popular background jobs & workflows tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.

Celery is for: Python and Django teams who want a free task queue they run themselves on RabbitMQ or Redis.

Hatchet is for: Teams orchestrating background tasks and AI agent workflows who want an open-source engine that runs on Postgres.

Quick verdict

There’s no single winner; pick on your constraint. Choose Celery if your app is written in Python, especially Django or Flask. Choose Hatchet if you want an open-source task engine you can self-host on the Postgres you already run.

Celery vs Hatchet — Side by Side

	Celery	Hatchet
Category	Background Jobs & Workflows	Background Jobs & Workflows
What it is	Open-source distributed task queue	Task orchestration engine
Languages	Python	Python, TypeScript, Go, Ruby
What it runs on	Your RabbitMQ, Redis or Amazon SQS broker	Hatchet Cloud or self-hosted on Postgres
How you pay	Free (BSD); you pay for your infrastructure	Per task run and event; no plan fee
Free access	Full open-source project	1M task runs a month with a card on file
Pricing	Free	Free
Starting price	Free tier available	Free tier available
Free tier
Rating	4.3	4.4
Best for	Background Jobs & Workflows — Python, Django, self-hosted	Background Jobs & Workflows — Postgres-backed, AI task orchestration, open source

Pros & Cons

Celery

Free and open-source
Mature and in production use for many years
Deep Django/Flask integration
Flexible broker support

Python only
You run the broker and workers
Configuration can be complex

Hatchet

Simple Postgres-based architecture
Easy to self-host
Built for AI task orchestration
Fine-grained concurrency control

Younger project, smaller community
Fewer integrations than incumbents

Key Features Compared

Celery

Open source under the BSD-3-Clause license; current stable version 5.6
RabbitMQ and Redis brokers are feature complete; Amazon SQS is also supported
Result backends include Redis, SQLAlchemy, Django ORM and Memcached
Periodic tasks with celery beat, including crontab expressions
Canvas primitives for groups, chains and chunks of tasks
Supports Python 3.8 to 3.13 and PyPy3.9+

Hatchet

Open source under the MIT license; self-hosting needs only PostgreSQL for basic use
Hatchet Cloud is pay-as-you-go with no plan fee
With a card on file: 1M task runs and 1M events a month included, then $30 per 1M task runs and $5 per 1M events
Card-on-file plan includes 100 workers, 50 users and 7-day retention
Without a card, lower limits apply and tasks are dropped once a free limit is reached
SDKs for Python, TypeScript, Go and Ruby

Choose Celery if…

Your app is written in Python, especially Django or Flask.
You want a free queue and already run RabbitMQ or Redis.
You need periodic tasks and task chains without a hosted service.

Celery review & pricing

Choose Hatchet if…

You want an open-source task engine you can self-host on the Postgres you already run.
You need concurrency and rate limits per tenant or per key.
You want managed hosting with no monthly plan fee.

Hatchet review & pricing

Frequently Asked Questions

Is Celery better than Hatchet?⌄

What is the difference between Celery and Hatchet?⌄

What it is — Celery: Open-source distributed task queue. Hatchet: Task orchestration engine. Languages — Celery: Python. Hatchet: Python, TypeScript, Go, Ruby. What it runs on — Celery: Your RabbitMQ, Redis or Amazon SQS broker. Hatchet: Hatchet Cloud or self-hosted on Postgres. How you pay — Celery: Free (BSD); you pay for your infrastructure. Hatchet: Per task run and event; no plan fee. Free access — Celery: Full open-source project. Hatchet: 1M task runs a month with a card on file.

Celery vs Hatchet: which is cheaper?⌄

Celery pricing: Free. Hatchet pricing: Free. Confirm current pricing on each tool's official site, as plans change.

Which is rated higher, Celery or Hatchet?⌄

In our catalog, Celery rates 4.3 out of 5 and Hatchet rates 4.4 out of 5, so Hatchet has a slight edge on reviews.

When should I skip both Celery and Hatchet?⌄

Skip Celery if you don’t want to run a broker and workers. Inngest and Hatchet offer managed Python SDKs. Skip Hatchet if you want a library rather than a separate engine. Graphile Worker and River run inside your app on Postgres.

Sources · tool facts checked November 2026