What tools and frameworks do you use to create your SaaS?

Lot's of people are commenting with their development stack, but I thought I would list some tools/services:

• Auth0 (https://auth0.com/) for handling authentication, and scale for B2B integrations (ie. LDAP...etc).
• Paddle (https://paddle.com/) for payments, so I don't have to worry about cross-country sales tax.
• Google Analytics (https://marketingplatform.google.com/intl/en_uk/about/analytics/) for ... analytics.
• Crispchat (https://crisp.chat/en/) for marketing automation, CRM and chat.
• Uploadcare (https://uploadcare.com/) for storing files and photos.
• Netlify (https://www.netlify.com/) for "free" marketing sites hosting.
• Sentry (https://sentry.io/) for logging.
• Azure Devops (https://azure.microsoft.com/en-gb/services/devops/) for code storage, task/bug management, CI/CD pipelines...all for free.
• Formflare (https://formflare.io/) for newsletter sign-ups (p.s. this is my own product, #shamelessplug!)

For me, PHP (Laravel) + InertiaJS + VueJS + TailwindCSS = 🎉

Elixir + Phoenix + LiveView + TailwindCSS.

If it's bigger, I'll also use Vue and maybe even GraphQL.

If it's really simple, then I'd probably use something completely different just so as to keep on learning. I'm a pretty strong believer in learning a new language every year or two and continually learning new frameworks, APIs, protocols, etc.

Using react, nodejs and express. For session management using SuperTokens (https://supertokens.io/) instead of express sessions. Though they are relatively new, they look very promising. Definitely more secure anyways.

AWS serverless stack (ideally, only pay per use AWS services), golang for the backend and reactjs + tailwind (it's f-ing amazing 🎁)

Looks like I'm the lone .NET warrior here!

[EDIT] I'm not alone ;-)

Next.js (React) + Bulma + Firebase Auth + Firestore DB + ZEIT Now

I'm a big fan of Ruby on Rails, Bootstrap 4, and a sprinkle of jQuery.

I will avoid the vendors to chose, there are 10-50 choices to make and none are the best blind choice, mentioning a product blindly is a disservice to you so I'll instead be more helpful and focus on the technology for SaaS.

Assuming the infrastructure is a cloud service provider (CSP) that looks after IAM, DNS, compute, and network.

• SAML: for federated authentication (to every identity provider)
• Relational database: for the small amout of persistent data you will need to store
• Object storage; Chose a AWS S3 compatible service like GCP, Wasabi, SwiftStack, Dreamhost, or AWS itself
• Document storage: for fast search across large datasets like logs and analytics needed to improve your services. Luscene is the technology behind solutions like ELK (Elasticsearch) and Solr, I personally like to chose something that supports a GraphAPI like RavenDB and try to avoid ancient style document DBs like MongoDB because of the complexity and limited 'valid' use cases.
• Containers! very important for a SaaS to put workloads into granular, idempotent, and immutable constructs like kubernetes pods or docker for the ability to scale beyond the limitations of network-based routing and load balancing. This is the rare case more options is not always more complex, unless you actually start exploring those options, when you need them they are a choice you have.
• Programming language: chose one with more flexibility so your core contributers can use the same language for many different uses. For example Python can be used for systems and ops, API and website, Data Science and Machine Learnging, then there is Go which is great for backends and getting better for frontends with the help of webasembly, is used heavily in the container world, and a Rego derivative is used for Security (OPA, Conftest) and other security tools (Snyk, CVE, Cloudflare PKI, Gophish, Gosec, and even a new TLS implementation).

BE WARNED, do not chose a programming language that is using floating-point arithmetic if you intend to be doing any currency or number analysis that must be accurate! Chose an arbitrary-precision arithmetic language of you will suffer bugs. Devs do not learn the fundamentals needed for precision any more, and many devs that do performance conscious coding or machine learning prefer floating point but that means you lose numerical accuracy and that could cost you a lot of real money or reputation if you're relying on accurate number computations.

If unsure, try doing 0.1 + 0.2 and if you don't get 0.3 you are using a language that defaults to floating point arithmetic - the warning is that these languages usually have hacky ways to get 0.3 (arbitrary-precise arithmetic) using uncommon primitives or 3rd party libraries but devs will always default to the native language when adding, minus, divide, multiply unless forced to use uncommon or 3rd party methods that often cause extra effort and a performance hit. So don't let these bug exist in the first place, chose the right tool for the job, chose a language with arbitrary-precise arithmetic to do your currency or accurate work, and chose a floating-point language to do the machine learning and analysis that ends up on dashboards and graphs and not end up on a statement or important report (and were wrong due to rounding errors...)

Learn from these insights and you will thank me one day.

Good luck

old school..php, yii, jquery

MERN stack basically. Just finishing backend in Express.js + mongoDB, no external services used - self hosted mongoDB, JWT authentication etc. , on DigitalOcean. Really good experience so far 👌

ReactJS + AWS Amplify (Cognito, GraphQL, Lambda)

If SEO is important, then Next.JS, Express and Postgres, if SEO isn't important, then Gatsby JS for landing page, and the app is built with React, Express, and Postgres.

vue.js+ node+ php+ mysql

I‘m so surprised that Django seems to be out of fashion.

For me, for the SplitCSS.com project, I used:

• Laravel
• Tailwind CSS
• NodeJS
• Headless Chrome
• UnCSS

Flask(Python) / ReactJS / Postgres
I also use my own open-source boilerplate https://www.saasforge.dev that allows me to focus on functionality instead of inventing the wheel every time.

Trying to keep it boring (and outsourced) --

• django web backends
• golang worker backends
• vanilla javascript (but mostly django rendered html)
• AWS RDS (mysql)
• AWS SQS message queue for distributing work
• AWS ALB + ACM auto-updating certificates in the load balancer
• AWS ASGs scale out backends based on load
• AWS Cloudwatch for logs and some metrics (for now, ELK hosted by elastic.co is tempting)

• Ruby/Rails
• Turbolinks + Stimulus + Stimulus Reflex
• Tailwind CSS
• PostgreSQL
• SendGrid
• Heroku

• Ruby on Rails
• React and some StimulusJS
• Bootstrap (considering moving some things to TailwindCSS)

Alpas framework, pebble, tailwindcss

Ruby on Rails + Bulma

Bulma.io/buefy/vue/netlify on
https://www.colorsandfonts.com

Mostly React (with Next.js) + Firebase + Firestore + Zeit or Netlify

Made a boilerplate from my current setup I use in my current projects: https://www.reactmilkshake.com/

I built https://noorahq.com using React, Typescript, Node.js, GraphQL and MongoDB. For the marketing pages I'm using Gatsby.

React and Firebase (for auth, db and hosting in one place), with some Firebase functions in JS for external api calls - good for an MVP but wouldn't want to be tied into Firebase for a more established site

Angular + Amplify + GraphQL + Cognito + Lambda = my complete stack

I look a lot for "serverless" stacks, even if I'm a sysadmin :'D. This way I can focus on business and dev without worrying about managing my infrastructure.

Elixir + Raxx + Svelte.js + TailwindCSS

A bit eclectic but honestly working very well for me.
Elixir is great, We launched on PH today and I'm not at all worried about traffic spikes

Frontend: Vue（vuetify）/Nuxt,
Backend: nest.js, MongoDB or MySQL, Nginx.
If SEO is important, then nuxt with vuetify.

Laravel + React + Bootstrap. For SEO and crawlers, we use prerender.io.

Figma for prototyping.
Frontend: Vue/Nuxt, PUG, SASS.
Backend: Koa.js, Passport.js, MongoDB, Nginx

Vue (w/ Vuex, Vue Router), LESS, Flask, MySQL, Redis, AWS, Sendgrid, Google Analytics, Amplitude

...and Stripe! Surprised to see most people skipping the payment part of SaaS :)

backend = node js + express + mongodb
frontend = mithril js + SCSS

reactjs + node + express + mysql + jwt
Maybe just Apache for serving simple static content

React + Redux + bootsptrap + nodejs (expressjs) + postgres

Personally I like laravel and vue.js. PHP is quite good for quick prototyping if you have some experience with it.