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

Zep: Pricing, Features & Alternatives

Zep stores what agents learn as a temporal knowledge graph, so it knows not just a fact but when it became true and when it stopped being true. Its open-source engine, Graphiti (Apache-2.0, about 32K stars), can be self-hosted on Neo4j, FalkorDB or Neptune; Zep Cloud adds managed users and threads, proprietary extraction and reranking models, a dashboard and governance. Zep Community Edition is deprecated, so self-hosting now means building on Graphiti. Pricing is credit-based (one credit per 350-byte episode; retrieval is free): Free 10K credits a month, Flex $125/month (50K credits), Flex Plus $375/month (200K credits), Enterprise custom with SOC 2 Type II, HIPAA and VPC deployment.

Zep Pricing Plans (2026)

Plan	Price	Highlights
Free	$0	10K credits / month · 2 projects · Retrieval free
FlexPopular	$125 / month	50K credits / month · $25 per extra 10K credits · 600 requests / min
Flex Plus	$375 / month	200K credits / month · Webhooks, analytics · Custom extraction instructions
Enterprise	Custom	SOC 2 Type II, HIPAA BAA · BYOK or your VPC · SLA

Pricing summary: Free · paid from $125/mo. Always confirm current pricing on the official site.

Key Zep Features

50K credits / month
$25 per extra 10K credits
600 requests / min

Pros

+Temporal graph: knows when facts changed
+Retrieval does not consume credits
+Open-source engine (Graphiti) underneath

Cons

−Paid tiers start at $125/month
−SOC 2 and HIPAA only on Enterprise
−Community Edition deprecated; self-host means Graphiti

Best Zep Alternatives

Compare all

Mem0

Free · paid from $19/mo

Cognee

Free · paid from $1/mo

Supermemory

Free · paid from $19/mo

Zep Compared

Zep vs Mem0 Zep vs Cognee Zep 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.

Zep FAQ

What is Zep used for?⌄

Zep is a ai agent memory tool. Managed context-graph memory for agents, built on the open-source Graphiti engine: tracks how facts change over time. SOC 2 Type II on Enterprise.

Is Zep free?⌄

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

How much does Zep cost?⌄

Zep offers a free tier, with paid plans starting at $125/month. Some plans are usage-based (pay-as-you-go).

What are the best Zep alternatives?⌄

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