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Developer Tools

Encoding, formatting, JSON, URL, and productivity utilities.

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tools available

2

guides available

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What this category helps with

  • Technical browser utilities for subnetting, passwords, encoding-style tasks, and developer checks.
  • Local-first tools that avoid sending sensitive technical inputs to a server.
  • Research-backed notes for standards-sensitive workflows such as CIDR and password generation.

Start with these tools

Subnet Calculator Calculate IPv4 CIDR network, broadcast, mask, wildcard, and usable host range. Password Generator Generate strong random passwords with length, character sets, and ambiguity controls.

All developer tools tools

Open a tool, check the examples, then jump to the matching guide when you need more context.

Subnet Calculator Calculate IPv4 CIDR network, broadcast, mask, wildcard, and usable host range. Open Password Generator Generate strong random passwords with length, character sets, and ambiguity controls. Open

Guides for this category

Each guide uses the matching Access Free Tools calculator as the example.