Free online data tools

64 tools

Tools for looking at and reshaping data without a spreadsheet or a database: CSV viewers, JSON explorers, SQL playgrounds and converters between table formats. Check the size limit and whether files are processed locally before you load anything sensitive.

Showing 25–48 of 64

0.573score
JSON to Table Converter
jsontotable.org
Turns nested JSON into an HTML table.
ArtifactNo sign-updata tools
0.573score
JSON to YAML (jsonformatter.org)
jsonformatter.org
Convert JSON text into YAML.
ArtifactNo sign-updata tools
0.573score
JSON Viewer (stack.hu)
stack.hu
Paste JSON and browse it as a collapsible tree in a readable layout.
ArtifactNo sign-updata tools
0.573score
Mockaroo
Mockaroo
Generate realistic fake rows in CSV, JSON, SQL or Excel formats from a field schema.
ArtifactNo sign-updata tools
0.573score
OneCompiler MySQL
OneCompiler
Online MySQL editor to write and run queries.
ArtifactNo sign-updata tools
0.573score
OneCompiler PostgreSQL
OneCompiler
Online PostgreSQL editor to write and run queries.
ArtifactNo sign-updata tools
0.573score
OneCompiler SQLite
OneCompiler
Online SQLite editor to write and run queries.
ArtifactNo sign-updata tools
0.573score
Online CSV Tools
Browserling
Collection of single-purpose CSV utilities to convert, swap columns, extract and replace data.
ArtifactNo sign-updata tools
0.573score
Online JSON Tools
Browserling
Collection of simple JSON utilities that run in the browser.
ArtifactNo sign-updata tools
0.573score
Online YAML Parser
Online YAML Parser
Parse YAML and display the equivalent JSON structure.
ArtifactNo sign-updata tools
0.573score
Programiz Online SQL Editor
Programiz
Online SQL editor that lets you run queries against example tables.
ArtifactNo sign-updata tools
0.573score
Random Number List Generator
RandomLists
Generates a list of random numbers inside a range, with or without duplicates, for raffles or games.
ArtifactNo sign-updata tools
0.573score
RANDOM.ORG Calendar Date Generator
RANDOM.ORG
Generates random calendar dates within a chosen date range using true randomness.
ArtifactNo sign-updata tools
0.573score
RANDOM.ORG Clock Time Generator
RANDOM.ORG
Generates random clock times between two limits, in 12 or 24 hour form, from true randomness.
ArtifactNo sign-updata tools
0.573score
RANDOM.ORG Integer Set Generator
RANDOM.ORG
Creates several sets of unique random integers in one go, handy for drawing teams or sample groups.
ArtifactNo sign-updata tools
0.573score
SQL Fiddle
SQL Fiddle
Online SQL editor for SQL Server, MySQL, MariaDB, PostgreSQL and SQLite with AI help.
ArtifactNo sign-updata tools
0.573score
SQL Online IDE
SQL Online
Browser SQL editor covering SQLite, DuckDB, PGlite, MySQL, PostgreSQL and SQL Server, no registration to start.
ArtifactNo sign-updata tools
0.573score
SQL Test
SQLTest.net
Free tool for testing SQL queries on sample schemas.
ArtifactNo sign-updata tools
0.573score
SQLize Online
SQLize
Browser SQL playground to run, format and share queries.
ArtifactNo sign-updata tools
0.573score
TableConvert
TableConvert
Converts tables between 30+ formats such as Excel, CSV, JSON, Markdown and SQL.
ArtifactNo sign-updata tools
0.573score
TablesGenerator (LaTeX)
TablesGenerator.com
Build LaTeX tables visually with merged cells and borders, or paste from a spreadsheet.
ArtifactNo sign-updata tools
0.573score
TablesGenerator (Markdown)
TablesGenerator.com
Edit a table visually and copy it out as a Markdown table.
ArtifactNo sign-updata tools
0.573score
XML Formatter (jsonformatter.org)
jsonformatter.org
Beautify and validate XML documents.
ArtifactNo sign-updata tools
0.573score
YAML Formatter (jsonformatter.org)
jsonformatter.org
Format and validate YAML documents.
ArtifactNo sign-updata tools