1
Also covers developer tools and sql · same kind of online tool · free plan
Mockaroo generates custom test datasets in CSV, JSON, SQL, and Excel formats, with an API mocking tool for software testing.
Alternatives
The Best Mockium Alternatives in 2026
24 alternatives4 free · 3 open source
Looking for something like Mockium? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 4 are free or have a free plan and 3 are open source.
Mockium generates fake data from user-defined fields and schemas and can export results in formats such as CSV, SQL, JSON, and XML.
Top picks at a glance
First suggestionMockarooMockaroo generates custom test datasets in CSV, JSON, SQL…Open source optionlibfolialibfolia provides a C++ library for processing data in the…Another optionSmartScripterSmartScripter generates custom scripts in Excel VBA, Google…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Mockaroo | Freemium | Not stated | Web |
| 2 | SmartScripter | — | Not stated | Web |
| 3 | Flink | — | Not stated | Web |
| 4 | JSON Schema | — | Not stated | Web |
| 5 | CRF++ | — | Not stated | Web, Windows |
| 6 | Coders Tool | — | Not stated | Browser extension, Web |
| 7 | libfolia | — | Yes | Linux, macOS |
| 8 | Biome | — | Not stated | Web |
| 9 | editorconfig | — | Not stated | Web |
| 10 | DevToys | Free | Not stated | Linux, macOS, Web |
All Mockium alternatives
2
SmartScripter
smartscripter.comAlso covers developer tools and sql · same kind of online tool
SmartScripter generates custom scripts in Excel VBA, Google Apps Script, Bash, JavaScript, PowerShell, and Python.
3
Flink
flink.apache.orgAlso covers developer tools and sql
Apache Flink performs stateful computations on data streams for stream processing applications.
4
JSON Schema
json-schema.orgAlso covers developer tools
JSON Schema describes and supports reliable use of the JSON data format.
5
CRF++
taku910.github.io/crfppAlso covers developer tools · same kind of online tool
The CRF++ toolkit implements Conditional Random Fields for segmenting and labeling sequential data in natural language processing tasks.
6
Coders Tool
coderstool.comAlso covers developer tools · same kind of online tool
Coders Tool offers browser-based utilities for JSON, SQL, text, encoding, networking, time conversion, and data formatting.
7
Also covers developer tools · open source
libfolia provides a C++ library for processing data in the FoLiA format.
8
Biome
biomejs.devAlso covers developer tools · same kind of online tool
Biome formats, lints, and checks web projects with a toolchain that includes hundreds of lint rules.
9
editorconfig
editorconfig.orgAlso covers developer tools · same kind of online tool
EditorConfig helps maintain consistent coding styles across different text editors through a shared file format.
10
Also covers developer tools · same kind of online tool · free
Handle tasks such as JSON formatting, text comparison, and regular expression testing with DevToys, a desktop toolkit.
11
dummyimage
dummyimage.comAlso covers developer tools · same kind of online tool
DummyImage generates placeholder images with customizable dimensions and foreground and background colors.
12
Also covers developer tools · same kind of online tool · free
HandyAI offers developer utilities for token counting, prompt analysis, JSON tool use conversion, and cost calculation.
13
ToDiagram
todiagram.comAlso covers developer tools · same kind of online tool
ToDiagram turns JSON, YAML, XML, CSV, and Mermaid into interactive diagrams and supports building custom node diagrams.
14
For the Badge
forthebadge.comAlso covers developer tools · same kind of online tool
For the Badge generates customizable SVG badges for software projects.
15
JSON Hero
jsonhero.ioAlso covers developer tools · same kind of online tool
JSON Hero provides a web interface for reading and exploring JSON files.
16
AndroidAssetStudio
romannurik.github.io/AndroidAssetStudioAlso covers developer tools · same kind of online tool
Android Asset Studio offers tools for generating app assets such as launcher icons.
17
Also covers developer tools
Code2Flow converts code or pseudocode into editable flowcharts with export options.
18
Also covers developer tools · open source
onUI lets users annotate web interfaces and export structured context for AI agents.
19
Also covers developer tools · open source
Create and edit database diagrams with ChartDB, which can visualize schemas from a database query.
20
Also covers developer tools · same kind of online tool · free
App DevTools groups browser-based tools for text, web code, encoding, validation, and data conversion tasks.
21
Fancy Badges
jmcrafter26.github.io/badgesAlso covers developer tools
Fancy Badges provides customizable project badges in multiple formats through a maintained software fork.
22
NConfig
digitalocean.com/community/tools/nginxAlso covers developer tools
NGINXConfig generates NGINX server configuration for performance and security settings.
23
codebeautify
codebeautify.orgAlso covers developer tools · same kind of online tool
Code Beautify offers online tools for formatting, validating, viewing, and converting developer files and data.
24
Appsmith
appsmith.comAlso covers developer tools · same kind of online tool
Build custom applications and dashboards with Appsmith, a low-code platform that connects to business data.
No alternatives match this filter.
Alternatives to similar tools
AppDevTools24 alternativesMockaroo24 alternativesFlink24 alternativeslibfolia24 alternativesDevToys24 alternativescodebeautify24 alternatives
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What is the best alternative to Mockium?
Based on features, tags and platforms, the closest alternatives to Mockium are Mockaroo, SmartScripter, and Flink.
Is there a free alternative to Mockium?
Yes. Mockaroo, DevToys, and HandyAI are free or offer a free plan.
Are there open-source alternatives to Mockium?
Yes: libfolia, onUI, and Chartdb.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative