Startup Stacks
Here are the tools that will allow you to launch your first SaaS in 21 Days.
Davida Ginter
Co-founder & CEO @ Eloo
My own stack as a startup founder (or: apps I remain open).
Josh Payne
Partner OpenSky Ventures
I spend $5,668 per month on SaaS apps to run Onward (My profitable, bootstrapped 12-person B2B SaaS startup that's reshaping customer loyalty). Most of these have free plans and early on you can get credits for these services through Ramp or Brex, accelerators, or even startups like Secret.
Kendra Koch
Building "The Least Prickly Place on the Web" at Divergently
Cancel unused tools, grab lifetime deals, and prepay to lower taxable income.
Matt Espinoza
Partner @ Clover, a holding company for internet businesses // Co-Owner of 1Price.co
I'm building a portfolio of internet companies with this tech stack.
Max Roslyakov
CEO @ xamsor.com
I choose every tool on this list after thorough research and testing. I can recommend most solutions as solid (though not always affordable).
Aakash Kanojiya
AI Enthusiast | Full Stack Developer | Growth Marketer | Sharing Insights on AI | Technical Content Writer
No-code + AI is the future. Build your next startup without writing code. Here are the best no-code tools to try in 2025.
Parikh Financial
Streamline Your Finances, Elevate Your Business.
Ryan Lazuka
Building the easiest to read Artificial Intelligence Email Newsletter FryAI
ChatGPT is just the tip of the iceberg. Here're 7 new AI Tools that do everything for you.
Together.ai
AI models training; >$500M raised from Kleiner Perkins and others
Tech Stack for Together.ai Chat
Engineer Girlfriend
Former Eng & Design at Snapchat
my FULL tech stack.
Tymon Terlikiewicz
CTO at Gralio
I use those tools every day to build Gralio.ai. As a seasoned software veteran and tinkerer, I'm always happy to build my own software. Those tools, however, stand out and are indispensable for me.
Top software picks in Startup
See which celebrities are using it. (Showing only tools from Startup stacks)

Slack is a communication platform designed to streamline teamwork. It offers real-time messaging, file sharing, and searchable archives of conversations, all in one place. Slack integrates with numerous other business applications to centralize workflows. It suits companies of all sizes seeking to improve collaboration and internal communication.
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Notion is an all-in-one workspace platform designed to help teams organize information, manage projects, and collaborate effectively. It centralizes notes, documents, tasks, and databases, making it easy for teams to access and share information. Notion allows users to customize their workspace with templates and integrations and offers AI features for writing assistance and information retrieval. It aims to be a flexible solution that adapts to various work styles and replaces the need for multiple single-purpose tools.
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Figma is an online design platform that helps teams design and build digital products. It allows for real-time collaboration between designers, developers and others, making it easier to create and test designs, gather feedback, and ensure everyone is working from the same information. Figma streamlines the design process, from wireframing and prototyping to handing off designs to developers. It's used by various sizes and types of companies for web design, app design, and more.
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PostHog is an all-in-one product development platform. It helps you understand user behavior, run A/B tests, and manage features. With tools like session recording and product analytics, PostHog helps you build better products. It's open-source, scalable for any size team, and offers a generous free tier.
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ChatGPT is an AI chatbot that gives you instant answers and helps with creative tasks like writing emails or generating ideas. Think of it like a super-smart assistant who can understand your questions and provide helpful information or even craft different kinds of text for you. ChatGPT is made by OpenAI and can be used by anyone, from individuals to entire companies.
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Google Workspace is a suite of online productivity and collaboration tools for businesses of all sizes. It includes popular apps like Gmail, Calendar, Drive, Docs, Sheets, Slides, Meet and more. Google Workspace aims to provide a seamless and integrated experience for communication, document creation, file storage, and team collaboration, all accessible from any device with an internet connection. It stands out with its user-friendly interface and strong collaboration features.
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Stripe Payments is a platform for businesses of all sizes to accept payments online. Through its software and APIs, it supports credit cards, debit cards, and various other payment methods globally. Stripe focuses on providing easy integration for businesses, from startups to large companies, with simple tools and flexible options for online payments.
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Webflow is a website design platform that allows both technical and non-technical users to build professional, custom websites without needing to write code. It provides a visual interface to design page layouts, add content, and create animations and interactions. Webflow also offers hosting, content management, and marketing tools, making it a comprehensive solution for businesses to create and manage their online presence. It's used by companies of all sizes, from small businesses to large enterprises.
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HubSpot Sales Hub is a sales software platform designed to help mid-sized and growing businesses streamline and automate their sales processes. It offers tools for managing contacts, tracking deals, sending emails, and analyzing sales performance. Its focus is on providing a user-friendly interface and a suite of integrated tools that work together seamlessly. HubSpot Sales Hub aims to improve sales efficiency, increase productivity, and drive revenue growth by providing a centralized system for managing all aspects of the sales pipeline.
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Mercury is a financial technology company offering banking and financial management tools specifically designed for startups. It provides FDIC-insured checking and savings accounts, credit cards, expense management, and integrations with accounting software. Mercury aims to simplify financial operations, offering a single platform for managing banking, expenses, invoicing, and bill payments. While not a bank itself, Mercury partners with established banks to provide these services.
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Ramp is an all-in-one finance software designed for mid-sized to large businesses, particularly those in fast-growing sectors. It combines corporate cards, expense management, bill payments, and accounting automation into a single platform. Ramp aims to save businesses time and money by automating tasks, enforcing spending policies, and providing insights into company spending. It integrates with popular accounting systems and promises to simplify financial operations, making them more efficient and transparent.
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Gusto is an all-in-one HR platform designed for small and medium-sized businesses in the USA. It offers payroll, benefits administration, hiring and onboarding tools, and HR management features. Gusto aims to simplify and automate HR processes, ensuring compliance and saving you time. It's known for its user-friendly interface, strong customer satisfaction ratings, and comprehensive feature set.
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Vercel is a cloud platform designed to help developers build and launch websites and web applications quickly. It provides tools and infrastructure for a streamlined development process, enabling teams to go from code to a live website with minimal effort. Vercel focuses on performance and scalability, ensuring websites can handle large amounts of traffic and load quickly for users worldwide. It boasts a user-friendly interface and integrations with popular development tools, making it a popular choice for businesses of all sizes looking to improve their online presence.
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Cursor is an AI-powered code editor designed to boost developer productivity. It offers AI-assisted code completion, the ability to generate code from natural language prompts, and codebase-specific answers. While seemingly geared towards individual developers, testimonials highlight its team utility. Cursor prioritizes speed, a familiar coding environment (supporting extensions and themes), and data privacy with an optional local mode. It promises a significant improvement over existing AI coding tools.
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Clay is a data enrichment and outreach tool that helps businesses improve sales outreach. It offers access to over 75 data providers, AI-powered research, and personalized messaging features, all within a user-friendly spreadsheet interface. Clay aims to streamline the lead generation process, improve data accuracy, and automate repetitive tasks, allowing sales teams to focus on building relationships and closing deals.
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Loops is an email platform designed for SaaS companies needing streamlined product, marketing, and transactional emails. It offers a single interface for all email types, focusing on ease of use and integration with existing software stacks. Key features include simplified design tools for consistent branding, easy-to-use APIs, automated email sequences ("Loops"), and dynamic audience segmentation. Loops prioritizes deliverability with features like intelligent queuing and DNS management. It's suitable for businesses of all sizes who want a less complex, more integrated email solution.
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