Check headers, see details, get hints
Check URLs and hostnames for HTTP headers. View all returned headers and identify missing security headers. Receive warnings for existing headers to improve website security.
Showing 401–420 of 1,000 ranked alternatives.
Siarhei Kucheika
Snap and identify U
Identify U.S. banknotes by snapping photos or uploading images. View detailed information including serial numbers and denominations. Access real-time market prices and current offers for trading.
丰 黄
Send push via HTTP API
Send push via HTTP API. Customize icons, group , set ringtones, and enable continuous or critical alerts. Support encrypted pushes and system push services. Does not drain battery. Prioritizes privacy and security.
Francis Wildman
Add page numbers to PDF files
Add page numbers to PDF files in headers or footers, left, right, or center. Set alternate left-right numbering. Define a page range to , starting from a specified number. Skip pages like covers or indexes.
Davyd Alami
Check handles, find profiles, spot impersonators
For usernames across social media, websites, and forums. Tap to view public profiles and links. Check handle availability, audit existing accounts, and identify impersonators.
Pavel Ahafonau
Routes and identify bottlenecks
Network routes with real-time monitoring and bottleneck detection. Perform to identify path issues. View animations and detailed path information. Receive continuous updates on network performance.
Do Tri
Check and view performance trends
View and performance metrics with real-time updates. Track daily, weekly, and monthly trends using comparison graphs. Access Est. and Impressions data on mobile. Log in securely with Google Sign-In without storing personal information.
Vicki Partridge
Surfaces, angles, and levels precisely
Turn your iPhone into a , angle gauge, and measuring . Check if surfaces are or plumb. Get real-time tilt readings in degrees. Calibrate to align with objects. distances using the device's sensors.
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.