
Flask
ExpressJS
Django
Yii Framework
Bottle
Ruby on Rails
Laravel
FastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

Mockaroo
Universal Data Generator
Mocki
Generate Data
MockDataGenerator
Smock-it is a powerful CLI tool designed to simplify test data generation for Salesforce. A lightweight alternative to Mokraoo, it helps developers and QAs quickly generate, manage, and customize data for seamless testing and streamlined workflows.

Which is more popular?
Based on our record, FastAPI seems to be more popular. It has been mentioned 314 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | fastapi.tiangolo.com | concret.io |
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| Company | Startup from Colombia | 2024 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of FastAPI yet.
Smock-it(also known as Smockit) is a tool for generating test data for Salesforce quickly and accurately through an easy-to-use command-line interface. Built by Concret.io, it goes beyond traditional tools and can be an alternative to tools like Mockaroo, Mocki, Snowfakery, and GenRocket for...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


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Overall verdict
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FastAPI from the ground up
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Share your experience with using FastAPI and Smock-it. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


When our backend team needs to build services for data parsing, aggregators, or high-load APIs, FastAPI is our absolute go-to choice. It completely lives up to its name-development speed is outstanding. The...
FastAPI, as the name hints, is a swift mover. Built on Starlette, it’s all about speed and performance with Python. Crafting API masterpieces at the speed of light, now that’s something.
Since its release in 2018, it has rapidly gained popularity due to its great performance and simplicity. In fact, according to PyPi Stats, FastAPI has over 9 million monthly downloads, surpassing even full-stack...
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Recommendations tracked on public social media and blogs since March 2021.


If your FastAPI app talks to a database through SQLAlchemy, chances are high you will meet it sooner or later. Not on your machine, of course. It shows up in production, after a few quiet hours, under load. And the reflex is always the... - Source: dev.to / 6 days ago
API: FastAPI with async SQLAlchemy, PostgreSQL 17 for data, Redis for caching and rate limits. The cache is invalidated by a single version counter bumped on every write: no fine-grained purging to manage. - Source: dev.to / 15 days ago
I used FastAPI, a Python framework built specifically for creating APIs quickly, with automatic validation and interactive documentation baked in. - Source: dev.to / about 2 months ago
Tracking Smock-it since Apr 2025.
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Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple
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Generate realistic Salesforce test data with proper relationships and record types in minutes! Direct upload to sandboxes—no CSV wrangling, no production data risks.
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Using Mocki you can create, run and deploy mock services without hassle. Use your mock services to run tests independent of external services, design APIs and remove backend dependencies for your frontend team.
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