Work · alternatives · 2026

24 alternatives to Mockingbird: Generate mock data streams for your next data project

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mockingbird: Generate mock data streams for your next data project launched in 2023; newer entries below may have overtaken it.

1
Mock API Generator▲555
Generate custom data & API to build apps in less than 30s
2021 · retool.com · its alternatives →
2
Mockaroo▲354
A realistic data generator to test your app
2015 · mockaroo.com · its alternatives →
3
Mockingbird▲8
create and share mockups easily.
2015 · gomockingbird.com · its alternatives →
4
MockThis▲80
Generate mock data using AI
2023 · its alternatives →
5
Mock Turtle▲72
GUI approach to generating realistic mock JSON data
2022 · mockturtle.net · its alternatives →
6JH
JSONator – HTTP endpoints for mock data▲7
2014 · jsonator.herokuapp.com · its alternatives →
7
AI-Powered Mock API Generator▲86
Generate customized, realistic mock data & APIs, via GPT
2023 · its alternatives →
8GJ
Generate JSON mock data for testing/initial app development▲103
Easily create complex JSON data structures using intuitive templates.
2023 · jsongenerator.io · its alternatives →
9
Mockflow▲80
Online wireframe tool
2014 · mockflow.com · its alternatives →
10
Mockreate▲66
Figma plugin to generate & customise random data for designs
2022 · figma.com · its alternatives →
11AF
A free, open-source, collaborative, mock API▲5
2021 · mockachino.com · its alternatives →
12
Mock Data▲5
Generate realistic mock data for apps - quick & easy!
2025 · mock-data.com · its alternatives →
13RG
Rapidmock – Generate a mock API in seconds▲7
2022 · rapidmock.com · its alternatives →
14
Mock Data Generator▲4
Paste real JSON, get 1,000 coherent rows that match it
Jun 2026 · jsondevtools.org · its alternatives →
15
Mock Data▲4
Generate realistic mock data for apps - quick & easy!
2025 · mock-data.com · its alternatives →
16PD
progLipsum, Dead Simple Test Data Generation For Developers▲9
2012 · proglipsum.com · its alternatives →
17
Data Mock Generator▲3
Generate Realistic Test Data — Instantly.
Nov 2025 · data-mock-generator.com · its alternatives →
18WT
Ways to build real time interactions with Apache Spark▲9
2017 · spoddutur.github.io · its alternatives →
19
MockBlast▲11
Generate 1M+ rows of SQL/Mongo data instantly & fast.
Jan 2026 · its alternatives →
20
Curator – an open-source library for synthetic data generation▲13
Synthetic data generation is an essential step in training and evaluating LLMs/Agents/RAG pipelines, but tooling around this is still lacking. We're introducing Curator, an open-source library designed to streamline the data curation process. While there are many libraries to prompt LLMs, the semantics of generating synthetic data is different from prompting. For example, we need to process a large number of prompts (sometimes in millions or more) while accepting some failures, utilize several stages of prompting, incorporate human feedback, and filter out bad data using verifiers…
2025 · github.com · its alternatives →
21
Data mock▲3
One word for mocking data
2023 · its alternatives →
22BA
Built a low-latency on-chain data stream: We'd love feedback▲5
2018 · dev.tokenanalyst.io · its alternatives →
23
MockDataGenerator▲6
Mockdata in 10 seconds. 99¢/ export. JSON / CSV / SQL INSERT
2025 · mockdata-generator.toolsfor99cents.com · its alternatives →
24
Mocknica - AI-Powered Mock API Server▲8
Create mock APIs in seconds with AI. Ship prototypes faster.
Dec 2025 · mocknica.dev · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →