A collection of practical online tools

Practical web tools, organized by category.

JJ Tools brings together focused online utilities across finance, networking, security and more.

No account needed
Fast results
Privacy-minded

Tool Categories

Find the right category and open the tool in a new tab.

FIRE (Financial Independence Retire Early)

Tools to Achieve FIRE

IP Networking

Handy utilities for IP networking

CCTV

Camera coverage, storage and bandwidth planners for surveillance setups.

PSE (Philippine Stocks Exchange) Tools

Information and tools for the Philippine Stocks Exchange (PSE)

About JJ Tools

JJ Tools organizes focused web utilities into category-specific sites. Each subdomain hosts a set of related tools so you can quickly find and use the right one.

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Tools on JJ provide estimates and informational outputs. Results are not guaranteed to be accurate — always verify anything important.