Best Utilities / Developer Tools in 2026

Free Online Calculators, Converters, and Tools.

Key utilkit features:

Convenient utility collection Ease of use Web-based accessibility Time-saving automation

Stop sharing plain, boring screenshots. Add stunning backgrounds, pro annotations, and instant cloud links — all in one click. Pay once, own it forever.

Key ScreenSnap Pro features:

Ease of Use High-Quality Captures Editing Tools Cloud Integration

Visit website paid $29 / One-off

Mouse Clicker automates repetitive clicks with adjustable speed, interval timing, and click frequency control, making tasks faster, easier, and more efficient.

Key MouseClicker features:

Click Intervals Click Configurations Cross-Platform Support

free

Convert PDF, Word, image, video, audio, and more on FreeFastConverter.com — no signup, no watermarks, free daily conversions.

Key FreeFastConverter.com features:

Image Converter Image Compressor Documents Conversion Audio Converter

freemium

Free online tools for everyone. No signup required.

Key Plexto.tools features:

Simple interface Niche tool focus Web-based accessibility Potential for free or low-cost usage

Symvanta gives your AI coding agent your codebase's real call graph over MCP, so it stops guessing and knows what breaks before it edits.

paid $19 / Monthly

55 free formatters, converters, generators, and reference tools for developers — JSON, Base64, JWT, regex, hashes, subnets. Nothing you paste is ever uploaded.

Key WhiteKit.dev features:

100% Client-Side Processing No sign-up Offline Capable Unified Toolset

free

Native macOS clipboard manager with searchable history, OCR, and snippets.

Key ClipBuddy features:

Screenshot OCR Semantic Search Paste Stack Privacy Architecture

freemium $2 / Monthly

10015.io is an all-in-one toolbox offering many tools from various categories.

Key 10015.io features:

User-Friendly Interface Wide Range of Tools No Registration Required Cross-Platform Support

Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON.

Key JSONFormatter.org features:

User-Friendly Interface Multiple Tools Free to Use Cross-Platform

convert anything to anything - more than 200 different audio, video, document, ebook, archive, image, spreadsheet and presentation formats supported.

Key CloudConvert features:

Versatility User-Friendly Interface Cloud Integration API Access

Paste is a clipboard manager for Mac and iOS devices.

Key Paste App features:

Visual Organization Collaboration Features Template Library Cross-Device Synchronization

paid Free Trial $29.99 / Annually

Helping you make rational decisions, one calculation at a time.

Key Omni Calculator features:

User-Friendly Interface Wide Range of Calculators Accuracy Educational Value

OP Auto Clicker is an all-in-one tool to automate mouse clicks.

Key OP Auto Clicker features:

Ease of Use Customizability Free to Use Low Resource Consumption