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.

AI Agent MemoryFree tier

Cognee: Pricing, Features & Alternatives

Cognee builds a knowledge graph plus vector index from documents, code and conversations, and gives agents four operations: remember, recall, improve and forget. Answers come with the graph evidence behind them. It can run entirely locally with a bundled extraction model and no LLM key, and has Python, TypeScript and Rust SDKs, a CLI, REST and an MCP server, with plugins for Claude Code and Codex. The library is free to self-host. Cognee Cloud is free for 1M tokens, then $1 per 1M tokens plus $5 per extra workspace; Enterprise is a bring-your-own-cloud engagement.

Cognee Pricing Plans (2026)

Plan	Price	Highlights
Open source	$0 (Apache-2.0)	Full memory engine · Runs locally · Docker or Compose
Cloud Free	$0	1M tokens included · One workspace · MCP and agent integrations
StandardPopular	$1 per 1M tokens	$5 per extra workspace / month · Slack, Notion, Linear, Drive sources · Code indexing
Enterprise	Custom (BYOC)	Bi-temporal memory · Provenance on every answer · Support SLA

Pricing summary: Free · paid from $1/mo. Always confirm current pricing on the official site.

Key Cognee Features

$5 per extra workspace / month
Slack, Notion, Linear, Drive sources
Code indexing

Pros

+Graph memory with evidence for every answer
+Runs locally without an LLM key
+Cheap usage-based cloud

Cons

−More moving parts than a plain memory API
−Graph extraction adds ingest latency
−Smaller ecosystem than Mem0

Best Cognee Alternatives

Compare all

Mem0

Free · paid from $19/mo

Zep

Free · paid from $125/mo

Supermemory

Free · paid from $19/mo

Cognee Compared

Cognee vs Mem0 Cognee vs Zep Cognee vs Supermemory

In-depth guideBest AI Agent Memory 2026: Mem0 vs Zep vs Cognee vs SupermemoryYour agent forgets everything when the chat ends. Two open-source memory layers and two managed services compared on how they store memory, what they cost for 1,000 users, and why every vendor claims the top benchmark score.

Cognee FAQ

What is Cognee used for?⌄

Cognee is a ai agent memory tool. Open-source (Apache-2.0) knowledge-graph memory for agents: turns documents, code and conversations into a graph you can query. Runs locally without an LLM key.

Is Cognee free?⌄

Yes — Cognee has a free tier you can start with, and paid plans for more usage and features.

How much does Cognee cost?⌄

Cognee offers a free tier, with paid plans starting at $1/month. Some plans are usage-based (pay-as-you-go).

What are the best Cognee alternatives?⌄

Popular Cognee alternatives include Mem0, Zep, Supermemory. Compare pricing and features on our Cognee alternatives page.