Dev Stack Use Cases

Pre-built tool stacks for common developer scenarios — each one 5-10 tools picked for a specific job. Mix and match, compare alternatives, skip the guesswork.

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B2B SaaS

6 stacks

Building blocks for B2B software: subscriptions, SSO, billing, ops.

Adding enterprise SSO, SAML, and SCIM to an existing B2B SaaS

Bolt enterprise SSO, SAML 2.0, OIDC, and SCIM provisioning onto an existing product without owning IdP integrations yourself.

📦 8 tools $200-500/mo at 5 enterprise SSO connections

Customer support, onboarding, and product tours stack for B2B SaaS

Activate, retain, and support SaaS customers with a layered stack covering in-app onboarding, proactive support, and help desk — without a 6-figure CS platform.

📦 9 tools $350-700/mo at 1,000 paying users with active onboarding

End-to-end B2B SaaS subscription billing, auth, and product stack

Complete stack for launching a B2B SaaS with seat-based subscriptions, SSO-ready auth, feature flags, and error monitoring.

📦 8 tools $250-600/mo at 1,000 paying users

Modern usage-based and metered billing stack for API-first products

Metered billing infrastructure for API products: ingest usage events, aggregate meters, invoice with overages, and report MRR accurately.

📦 8 tools $300-800/mo at 1,000 paying API customers (excluding Stripe transaction fees)

Multi-tenant admin dashboard with audit logs and role management

Internal admin tooling stack for B2B SaaS: tenant impersonation, RBAC, immutable audit logs, and ops dashboards without building from scratch.

📦 8 tools $150-400/mo at 10 internal admins and 500 tenant orgs

Sales ops, data pipeline, and revenue intelligence stack for B2B SaaS

Sync product data to CRM, track PQLs, automate revenue reporting, and wire sales ops without a $50k/year Salesforce implementation.

📦 9 tools $400-900/mo at 5,000 customers with full warehouse + CRM sync
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Consumer Mobile

6 stacks

Stacks for mobile apps with IAP, attribution, crash reporting.

Cross-Platform Mobile App with IAP (React Native / Flutter)

End-to-end stack for React Native or Flutter apps that need in-app purchases, subscriptions, and parity across iOS App Store and Google Play.

📦 9 tools $0–$300 at launch (RevenueCat free to $2.5k MRR, Supabase free tier 50k MAUs, AppsFlyer free 6k installs/month, PostHog free 1M events, OneSignal free 10k subscribers). Expect $800–$3k/month at scale (100k MAU).

Fitness & Wellness App Stack

Full-stack toolchain for health tracking apps: HealthKit / Google Fit integration, subscription monetisation, wearable data, push notification coaching, and GDPR-compliant analytics.

📦 9 tools $0–$350 at launch (RevenueCat free to $2.5k MRR, Supabase free tier, Firebase free tier, Amplitude free 10M events, OneSignal free 10k subscribers). Scales to $600–$2.5k/month at 50k MAU.

Free Ad-Supported Mobile App Monetization Stack

Toolchain for ad-monetised mobile apps: mediation, waterfall configuration, user-level ROAS measurement, consent management, and in-app event analytics.

📦 10 tools $0 upfront (all ad networks and mediation are free; you earn revenue from impressions). AppsFlyer paid plan from ~$0.06/active device/month for >6k installs. Amplitude free up to 10M events. OneSignal free up to 10k subscribers. Expect $50–$300/month in tooling at 100k DAU; ad revenue at that scale should be $3k–$30k/month depending on genre and geography.

iOS Subscription App Stack

Production-ready toolchain for building an iOS app with in-app purchases, subscriptions, crash monitoring, and growth analytics.

📦 9 tools $0–$450 at launch (RevenueCat free up to $2.5k MRR, Firebase Spark free tier, AppsFlyer free up to 6k installs/month, Amplitude free up to 10M events, OneSignal free up to 10k subscribers). Scales to ~$500–$2k/month at $50k MRR.

Mobile Game Backend Stack

Scalable backend for mobile games: leaderboards, matchmaking, real-time multiplayer, IAP, and live-ops without building game server infrastructure from scratch.

📦 10 tools $50–$500 at launch (Nakama self-hosted on a $20/month VPS, RevenueCat free to $2.5k MRR, GameAnalytics free tier, AppsFlyer free 6k installs). PlayFab managed: $1/1000 MAU. Scales to $2k–$10k/month for 500k MAU live-service game.

Social & Community Mobile App Infrastructure

Production backend for consumer social apps: real-time chat, feeds, media storage, moderation, push notifications, and growth attribution — without a custom server fleet.

📦 9 tools $0–$400 at launch (Stream free 25 MAU, Supabase free tier, Cloudinary free 25 credits, OneSignal free 10k subscribers, Branch free 10k installs). Scales to $2k–$8k/month at 200k MAU depending on Stream plan and media volume.
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AI Startup

7 stacks

AI-native product stacks — LLM, RAG, agents, voice, observability.

AI Image and Video Generation SaaS

Infrastructure stack for building a generative media SaaS — image generation, video synthesis, async job queuing, and cost-efficient model routing.

📦 10 tools $800–$8,000; dominated by GPU inference costs. Fal AI FLUX.1 Pro at ~$0.05/image × 50k images/month = $2,500.

Building Your Own AI Coding Assistant Product

Stack for shipping a custom AI coding assistant — code completion, chat, code search, and agentic refactoring — as a standalone product or IDE plugin.

📦 9 tools $300–$3,000; LiteLLM routing to Groq for completions and Claude for chat is the most cost-effective strategy. At 1k active devs × 500 completions/day × 200 tokens = 100M tokens/month.

Customer-Facing AI Chatbot SaaS

Production stack for shipping a multi-tenant AI chatbot with streaming, memory, guardrails, and usage-based billing.

📦 8 tools $150–$1,200 depending on token volume; OpenAI GPT-4o at ~$5/1M output tokens is the dominant cost driver.

LLM Production Observability and Evaluation

Stack for monitoring LLM applications in production: tracing every call, evaluating output quality, catching model drift, and controlling costs.

📦 9 tools $0–$500; Langfuse is free self-hosted, Braintrust has a generous free tier. Main cost is compute for running automated evals at CI time (LLM API calls for LLM-as-judge).

Multi-Agent Autonomous Platform

Stack for building production multi-agent systems that browse the web, write and run code, use tools, and complete long-horizon tasks autonomously.

📦 9 tools $500–$5,000+ depending on task volume; autonomous agent tasks with browser automation can easily run $0.50–$5 per task due to multi-step LLM calls and sandbox compute.

RAG Knowledge Base (Internal or External)

Retrieval-Augmented Generation stack for grounding an LLM in your company's docs, PDFs, and data sources with accurate citations.

📦 9 tools $200–$2,000; primary cost drivers are embedding inference volume and vector store storage/queries. Self-hosting Qdrant cuts storage cost by 80%.

Voice-First AI App (Assistant or Call Automation)

End-to-end stack for building a low-latency voice AI application — from microphone input to intelligent response to synthesized speech.

📦 9 tools $300–$3,000; Vapi charges per minute of call time (~$0.05–0.12/min depending on model tier); at 10k minutes/month expect ~$600–1,200.
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Fintech

6 stacks

Payments, cross-border, KYC, open banking, embedded finance.

Cross-Border Remittance & International Money Transfer App

Build a consumer or B2B remittance product that moves money across borders with competitive FX rates, local payout rails, and AML compliance.

📦 10 tools $2,000–$15,000/month in platform fees (excluding FX spread and per-transaction fees). CurrencyCloud: custom pricing, typically 0.2–0.8% FX margin. Sumsub: ~$2–5/verification. ComplyAdvantage: $500–$3,000/month base. Unit21: $1,500–$5,000/month.

Embedded Finance & BaaS Stack — Banking Services in a Non-Fintech Product

Embed bank accounts, cards, lending, and payments into a non-fintech SaaS, marketplace, or vertical app — without getting a banking licence.

📦 10 tools $500–$10,000/month platform fees + per-transaction costs. Unit: custom pricing (typically $0.25–0.50/account/month). Marqeta: $0.01–0.05/transaction + interchange split. Increase: no platform fee early-stage. Column: no monthly fee, per-transaction pricing.

Fiat-to-Crypto On-Ramp Integration for Your App

Let users buy crypto with card or bank transfer directly inside your app, without building a money transmitter from scratch.

📦 8 tools $0 platform fee for widget-based integrations (providers charge 1.5–4.9% per transaction). For API integrations: Sumsub $2–5/KYC, Chainalysis KYT ~$0.10–0.50/transaction, Sardine ~$0.05/transaction.

KYC / KYB Compliance API Stack for Fintech

Verify individual and business customers at onboarding, screen against sanctions and PEP lists, and monitor ongoing AML risk — all via API.

📦 11 tools $1,000–$20,000/month depending on volume. Sumsub: $1.50–$4/verification. ComplyAdvantage: $500–$3,000/month base + per-query. Unit21: $1,500–$5,000/month. Alloy: custom pricing (~$0.20–0.50/decision).

Open Banking Integration Stack (EU / UK PSD2)

Connect to bank accounts via open banking APIs to read transactions, verify identity, initiate payments, and run affordability checks — without asking users for their login credentials.

📦 9 tools $500–$5,000/month. TrueLayer: £0.10–0.25/API call or monthly subscription. Yapily: custom pricing. Plaid: $0.30–$1.50/connected account/month (US), similar for EU. Tink: custom. Salt Edge: $0.05–0.20/call.

Two-Sided Marketplace Payments (Airbnb / Uber Style)

Accept payments from buyers, split funds, and pay out providers — with chargebacks, compliance, and tax forms handled.

📦 9 tools $500–$5,000/month platform tooling (excluding per-transaction fees). Stripe Connect: 0.25% + $2 per payout. Sardine: ~$0.05/transaction. Persona: ~$1.50/verification. Trolley: $0.25–$3 per payout depending on method.
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DevTools & Infra

5 stacks

Observability, CI/CD, Kubernetes, developer productivity.

Developer Productivity Metrics (DORA + SPACE)

Tooling for engineering leaders to measure and improve team productivity using DORA metrics, SPACE framework signals, and developer experience surveys.

📦 8 tools $200–$500/mo (Swarmia or LinearB, 20–50 devs) to $2,000–$8,000/mo (Jellyfish enterprise, 100+ devs)

Kubernetes Platform Foundation

Core tooling for an internal Kubernetes platform team — GitOps delivery, policy enforcement, secret management, cluster autoscaling, and backup.

📦 10 tools $0 (all OSS tooling, excluding cloud infrastructure) — typical EKS cluster with these tools: $200–$800/mo in AWS costs depending on node count and storage

Modern CI/CD Starter Kit

Fast, maintainable CI/CD for a new codebase — GitHub Actions as the orchestrator, turbo/Nx for build caching, and drop-in fast runners to cut pipeline minutes.

📦 8 tools $0–$50 (small team, GitHub-hosted runners) to $500–$2,000 (20+ engineers, fast runners + Nx Cloud)

Modern Full-Stack Observability

Cover logs, metrics, traces, and RUM for production engineering teams — with both a cost-efficient OSS path and a premium managed path.

📦 10 tools $0 (full OSS self-hosted) to $3,000–$15,000+ (Datadog managed, 50–200 hosts with APM and logs)

Self-Hosted OSS Replacements for Common SaaS

Replace Zapier, Google Analytics, Mixpanel, Auth0, Firebase, and Slack with open-source self-hosted alternatives — for privacy compliance or cost control.

📦 11 tools $30–$150/mo (VPS infrastructure) vs $1,000–$5,000/mo (equivalent SaaS subscriptions)
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E-commerce

5 stacks

Headless commerce, marketplaces, subscriptions, trust & safety.

B2B Wholesale & Enterprise Commerce Platform

Technology stack for B2B wholesale and enterprise commerce: tiered pricing, net terms, purchase orders, ERP integration, and account-based buying experiences.

📦 12 tools Highly variable. Vendure + Postgres on a $200/mo VPS is viable at small scale. Elastic Path starts at $3,000/mo, Spryker at $5,000-15,000/mo for SaaS tiers. Avalara AvaTax starts at $50/mo for basic US tax, scales by transaction volume. Algolia at $500-5,000/mo depending on search volume. Total stack for a serious B2B deployment: $5,000-30,000/mo.

Digital Products Marketplace

Sell software licenses, downloadable assets, templates, courses, and digital content with secure delivery, global tax compliance via merchant of record, and copy protection.

📦 11 tools Lemon Squeezy or Paddle charge 5-8% of GMV (no monthly fee). Cloudflare R2 is ~$0.015/GB/mo with free egress. Supabase free tier covers most early-stage products; Pro is $25/mo. Postmark $15/mo for 50K emails. Total fixed overhead: $50-100/mo until meaningful GMV.

Headless E-commerce Architecture

Full headless commerce stack: decoupled storefront, API-first commerce engine, global CDN, and composable services for content, search, and media.

📦 12 tools $500–$8,000 depending on Shopify plan tier (Basic $39 → Plus $2,300), Algolia record/search volume, Cloudinary transformations, and Vercel bandwidth. Pure open-source path (Medusa + Typesense + self-hosted) can start at $100/mo on a single VPS.

Recurring Physical-Goods Subscription Service

End-to-end stack for subscription box businesses: recurring billing, subscriber management, physical fulfilment, shipping, retention, and dunning.

📦 11 tools $800–$5,000/mo for a subscription box doing $50K–$500K MRR. Chargebee starts at $599/mo (Scale), Klaviyo at $150-$600 depending on list size, EasyPost at per-label rates. Stripe Billing at 0.5% of recurring charges is often the largest cost at scale.

Trust & Safety for Two-Sided Marketplaces

Fraud detection, content moderation, KYC/AML verification, and abuse prevention for platforms connecting buyers and sellers.

📦 11 tools $2,000–$25,000/mo depending on GMV and verification volume. Sift charges per event (~$0.01–$0.03), Sumsub per verification ($1.50–$4), HUMAN by monthly MAU. Stripe Radar is included in Stripe pricing; Radar for Fraud Teams adds $0.02/screened charge.