• The mini tools from ASer
  1. For PDA (works on a desktop PC also):
     1. Q: How to check easy whether your clock shows correct time?
        A: Use the Easy Time Service: sereb.net/time
     2. Q: How to know your IP quickly?
        A: Your current IP address: sereb.net/ip
     3. Server time:
        • today.php (without HTML)
        • todayHTML.php (HTML)
        • now.php (HTML)
  2. For application and web developers:
     1. Q: How to view the values submitted via POST and GET methods?
        A: Write http://sereb.net/param/ to form's action, see sample: http://sereb.net/param/?Param1=Value1&Param2=Value2
     2. Q: How to calcualate easy how many symbols can contain field? A: Use the following Text Rulers (size in bytes):
        • ruler.txt (1 042)
        • rulerHex.txt (80)
        • ruler64.txt (64 000)
        • ruler64k.txt (65 536)
        • ruler512k.txt (524 288)
  3. For desktop PC (Windows):
     1. Adding entries to the standard context (right-click) menu in the Microsoft Internet Explorer (more info):
        • "Search in Wikipedia (ru)": download registry file
        • "Search in Google": download registry file
        • "Search in SOKR.ru": download registry file
• The tools from other vendors
  1. IP address tools:
     1. DomainTools.com (with User-Agent and ISP - click to IP Address)
     2. Ip2Location.com
     3. GeoBytes.com (with a map)
     4. GeoIpTool.com (with a small map)
     5. WhatIsMyIpAddress.com (with a small map, ISP and ability to trace email source IP address)
     6. IP-Lookup.net
     7. DnsStuff.com
     8. mxtoolbox.com (real CNAME Lookup)
     9. HScripts.com (look up A Record, AAAA, CNAME, MX, NS, PTR, SOA, SPF, SRV, TXT or ALL of DNS entries)
     10. DslReports.com (with User-Agent; mobile device friendly)
     11. Free GeoIP (with a map and API)
  2. Timezone detection:
     1. Ip2Location.com (by IP)
     2. GeoBytes.com (by IP)
     3. Auto detect a time zone with JavaScript (by Josh Fraser)
  3. Check if the specified port is opened:
     1. At uTorrent.com.
        Specify incoming port to check:
  4. All about your browser:
     1. Browser detect: detect.html
     2. browserobject.com/demo.php
  5. Speed tests:
     1. dslreports.com/mspeed (Mobile speed test: your internet speed, IP address, browser type)
     2. host-tracker.com/speedtest (From 10+ locations)
     3. mcafee.com/speedometer
  6. DOM (for web developers):
     1. What does your user agent claim to support?