| Centralops | https://centralops.net/co/ | DNS, Whois | 5 |
| DigWebInterface | https://www.digwebinterface.com | Dig, Dns, Domain | 5 |
| Domain tools | https://www.robtex.com/ | DNS, Whois | 5 |
| Domain tools | http://www.viewdns.info | DNS | 5 |
| Domain tools | http://FixYourIP.com | DNS | 4 |
| Domain tools | http://mega-check.com | DNS | 4 |
| Domain tools | https://www.whatismyip.com/ | Multi Lookup, Whois, BL, ports, headers | 4 |
| Domain Toolkit | https://w3dt.net/ | DNS, Network tool | 4 |
| MX Toolbox; Supertool | https://mxtoolbox.com/SuperTool.aspx | dns, tcp, https, blacklist, smtp, trace, etc | 1 |
| Domain Toolkit | http://www.intodns.com | DNS, Multi reports | 4 |
| SPF query | https://www.kitterman.com/spf/validate.html | SPF query | |
| Toolkit | https://www.webmaster-toolkit.com/ | DNS | 3 |
| Toolkit | https://bgp.he.net | BGP toolkit | 3 |
| Pingability | http://pingability.com | Monitor and downtime | 3 |
| Hex colours | https://www.color-hex.com/ | Colours | 4 |
| What is my IP | https://www.whatismyip.com/reverse-dns-lookup/ | Reverse DNS Lookup Tool | 4 |
| DNS Checker | https://dnschecker.org/ | Dnschecker, multilocation | 5 |
| DNSWatch | https://www.dnswatch.info/ | Domain Dossier | 4 |
| Luxsci | https://luxsci.com/smtp-tls-checker | Email Domain check | 5 |
| Emailstuff | https://emailstuff.org/ | DNS, Email, dmarc | 5 |
| DNS | https://dns.google.com/query?name=google.com&type=TXT&dnssec=true | Google DNS checker | 4 |
| DNS Spy | https://dnsspy.io/ | DNSspy , Monitor, validate and verify | 4 |
| Whois | https://www.whois.com/whois/ | Whois lookup | 4 |
| Geolocation | https://www.iplocation.net/ | Location – Geolocation IP checker | 4 |
| Domain DKIM | https://tools.wordtothewise.com/dkim/check/ | Dkim checks | 4 |
| Domain DKIM | https://www.mail-tester.com/spf-dkim-check | SPF, DKIM | 4 |
| Domain DKIM | https://dmarcian.com/dmarc-inspector/ | DKIM, Dmarc Inspect | 4 |
| Domain Dmarc | https://www.dmarcanalyzer.com/spf/checker/ | SPF, DKIM, Dmarc Analyzer | 4 |
| Debouncer | https://www.debouncer.com/blacklistlookup?attempt=1 | Email Blacklist checks | 4 |
| Mail Blacklist | http://mail-blacklist-checker.online-domain-tools.com/ | Email Blacklist checks | 4 |
| Spamcop | https://www.spamcop.net/bl.shtml | Email Blacklist checks | 3 |
| SSL Certificate Tools | https://www.sslshopper.com/ssl-certificate-tools.html | SSL Certificate Tools | 4 |
| SSL Labs full SSL review | https://www.ssllabs.com/ssltest/ | SSL validator and ciphers | 5 |
| Digicert | https://www.digicert.com/help/ | Digicert Website SSL Diagnostics; | 4 |
| Digicert | https://ssltools.digicert.com/checker/ | SSL Security and SSL/CSR checker; | 4 |
| SSL and Chrome, | https://www.websecurity.symantec.com/support/ssl-checker | Chrome distrust check, for Chrome 70+ | 4 |
| Geocert | https://www.geocerts.com/ssl-checker | SSL checker | 4 |
| SSL, Email, TLS , multiple checks | https://www.checktls.com/ | SSL checker | 4 |
| Free tools, basic SSL/CSR checks | https://www.clickssl.net/ssl-tools | SSL checker | 4 |
| SSL tools | https://www.mrdomain.com/products/ssl/tools/ | SSL tools | 4 |
| SSL For Free – Completely free! | https://www.sslforfree.com/ | SSL certs | 5 |
| Free SSL generation; Check SSL/CSR | https://confirm.globessl.com/ssl-checker.html | SSL certs | 4 |
| Analyze Responce Headers | https://securityheaders.com/ | Headers | 5 |
| Analyze Responce Headers | http://securityheaders.io | Headers | 5 |
| HTTP Header Checker | https://tools.keycdn.com/curl | Header Checker | 5 |
| Message Headers | https://toolbox.googleapps.com/apps/messageheader/ | Message Headers | 5 |
| Message Header Analyzer | https://testconnectivity.microsoft.com/MHA/Pages/mha.aspx | Header | 5 |
| Message Header Analyzer | https://mxtoolbox.com/EmailHeaders.aspx | Header | 5 |
| WorldTimeBuddy | https://www.worldtimebuddy.com/ | Time Difference | 5 |
| Time.is | https://time.is/ | Live clock | 3 |
| Virustotal – Virus Checks | https://www.virustotal.com/ | virus analysis | 5 |
| MetaDefender Cloud | https://metadefender.opswat.com/ | Virus check | 4 |
| Jotti | https://virusscan.jotti.org/ | Virus check | 4 |
| Fortiguard | https://www.fortiguard.com/faq/onlinescanner | Virus Scanner Online | 4 |
| Kasperski | https://virusdesk.kaspersky.com/ | Virus File checker | 4 |
| Https redirects | http://www.redirect-checker.org/ | Redirect Status checks | 5 |
| Robots | https://en.ryte.com/free-tools/robots-txt/ | Robots.txt check | 4 |
| Robots examples | https://developers.google.com/search/reference/robots_txt | Robots check | 4 |
| Robots | http://www.robotstxt.org/robotstxt.html | Robots check | 4 |
| Robbots Twitter | https://developer.twitter.com/en/docs/tweets/optimize-with-cards/guides/troubleshooting-cards#twitterbot | Robots check | 4 |
| SSL Security Test | https://www.immuniweb.com/ssl/ | Security, SSL test | 4 |
| Crypto checks | https://discovery.cryptosense.com/ | Security, Cryptography checks | 4 |
| Amazon AWS | http://aws.amazon.com/ | AWS | 5 |
| Cloud Portal | https://portal.azure.com/ | Azure Portal | 4 |
| MS Cloud , Azure | https://account.windowsazure.com | Azure Account Center | 4 |
| MS Cloud, AAD | https://aad.portal.azure.com/ | AAD admin center | 4 |
| MS Cloud, Azure | https://Portal.azure.com/#@mytenantname.onmicrosoft.com | Access to a tenant AAD | 4 |
| MS Cloud, Portal | https://portal.office.com/login | O365 Portal | 4 |
| MS Cloud, O365 | https://login.microsoftonline.com/ | O365 login | 4 |
| MS Cloud, OWA | https://outlook.office.com/owa/ | Office Web App (OWA) | 4 |
| MS Cloud, Onedrive | https://onedrive.live.com/ | OneDrive | 4 |
| MS Cloud, MSD admin | https://port.crm11.dynamics.com/G/Applications/Index.aspx | OLD Microsoft 365 admin center (pre H2/2019) | 4 |
| MS Cloud, O365 admin | https://admin.microsoft.com/AdminPortal/Home | NEW Microsoft 365 admin center | 4 |
| MS Cloud, MSD | https://home.dynamics.com/ | MS Dynamics | 4 |
| MS Cloud, MSD admin | https://admin.powerplatform.microsoft.com | PowerPlatform (MSD) | 4 |
| MS Cloud, PowerBI | https://powerbi.microsoft.com | PowerBI | 4 |
| MS Cloud, Help | https://docs.microsoft.com | MS Help | 4 |
| Atlassian | https://example.atlassian.net/browse/PROJECT-123 | Atlassian, Modern view | 4 |
| Atlassian | https://example.atlassian.net/browse/PROJECT-123?oldIssueView=true | Atlassian, Legacy view | 4 |
| MS Dynamics | https://admin.dynamics.com/environments | Modern View | 4 |
| MS Dynamics | https://port.crm11.dynamics.com/G/Applications/Index.aspx | Legacy View, for admins | 4 |
| Domains Registrars | http://namecheap.com/ | Registrar, cheap, bitpay | 5 |
| Domains Registrars | https://www.gandi.net | Registrar, many tLDs | 4 |
| Domains Registrars | https://godaddy.com/ | Registrar, auctions too | 3 |
| Domains Registrars | https://www.netim.com/ | Registrar, auctions | 3 |
| Domains Registrars | https://www.name.com/ | Registrar | 3 |
| Domains Registrars | https://www.101domain.com/ | Registrar, many tLDs | 3 |
| Domains Registrars | https://sedo.com/ | Domain Auctions | 4 |
| Domains Registrars | https://www.expireddomains.net/ | Expired domains grab | 5 |
| Crypto News | https://www.coindesk.com/ | Coindesk | 5 |
| Crypto news | https://www.bitcoin.com/ | Bitcoin.com | 3 |
| Crypto news | https://cointelegraph.com/tags/bitcoin | CoinTelegraph | 5 |
| Crypto news | https://www.ccn.com/ | CCN | 4 |
| Crypto news | https://bitcoinist.com/ | Bitcoinist | |
| Crypto news | https://www.newsbtc.com/ | NewsBTC | 4 |
| Crypto news | https://ethereumworldnews.com/ | Crypto news | 4 |
| Crypto news | https://www.dailyfx.com/bitcoin | Daily FX | 3 |
| Crypto news | https://masterthecrypto.com/ | | 3 |
| Crypto news | https://coinmarketcap.com/ | Market Capitalisation | 5 |
| Crypto Stats | https://coin360.com/ | Market Cap and wedges | 5 |
| Crypto Stats | https://bitinfocharts.com/ | Crypto Charts | 4 |
| Crypto Stats | https://bitcointicker.co | Ticker stats | 4 |
| Crypto Stats | https://www.blockchain.com/en/stats | BitcoinStats | 4 |
| Crypto Stats | https://coin.dance/stats | Coin Dance, graphs and chart | 5 |
| Crypto Stats | https://www.cryptocompare.com/ | CryptoCompare | 5 |
| Crypto Stats | https://btc.com/stats | Most private search engine | 3 |
| Crypto Stats | https://blockchair.com/compare | Blockchair | 3 |
| Crypto Stats | https://charts.bitcoin.com/btc/ | Price charts | 5 |
| Crypto fun | https://dickline.info/ | McAfee predicton tool to $1mil | 4 |
| Crypto fun | https://99bitcoins.com/bitcoin-obituaries/ | Bitcoin Ongoing Obituaries | 5 |
| Crypto Excahnges | https://www.coinbase.com | Coinbase | 3 |
| Crypto Excahnges | https://shapeshift.io/#/coins | Crypto excanging | 5 |
| Crypto Excahnges | https://www.bitmex.com | Bitmex | 5 |
| Crypto Excahnges | https://www.binance.com/en | Binance | 5 |
| Crypto Excahnges | https://www.kraken.com/ | Kraken | 4 |
| Crypto Excahnges | https://www.etoro.com/markets/btc/stats | Etoro, social trading | 4 |
| Crypto Excahnges | https://www.etoro.com/markets/btc | Etoro – Social Trading Exchange (no crypto cashout) | 4 |
| Crypto Excahnges | https://international.bittrex.com/ | Bittrex | 3 |
| Crypto Twitter | https://twitter.com/hashtag/bitcoin | #bitcoin | 3 |
| Crypto Twitter | https://twitter.com/hashtag/crypto | #crypto | 3 |
| Crypto Twitter | https://twitter.com/coinmetrics Coinmetrics.com | Twitter chanel | 3 |
| WebPageTest, performance | https://www.webpagetest.org/ | multi tests | 3 |
| Crypto DataMish, stats | http://datamish.com | crypto info | 3 |
| Crypto Whale Alerts | https://whale-alert.io/ | crypto alerts, big transfers and moves | 3 |
| Anonymous files upload | https://anonfile.com | anon uploads | 5 |
| Anonymous files upload | https://openload.cc/ | anon uploads | |
| Anonymous files upload | https://bayfiles.com/ | anon uploads | 4 |
| Anonymous image upload | https://unsee.cc/ | anon images, with expiry date | 5 |
| Email Validator | https://verifalia.com/validate-email | validate email inbox | 3 |
| Email Validator | https://www.textmagic.com/free-tools/email-validation-tool | validate email inbox | 4 |
| Email Server check | https://ssl-tools.net/mailservers | Secure Email, Starttls | 4 |
| Can I use? | https://caniuse.com/ | TLS. browser support | 4 |
| Wiki of TLS | https://en.wikipedia.org/wiki/Transport_Layer_Security#Web_browsers | TLS, browser support | 5 |
| Have I been pawned | https://haveibeenpwned.com/ | Secure email check | 5 |
| Ghostproject | https://ghostproject.fr/ | Secure email check | 3 |
| check your email | https://spycloud.com/ | Secure email check | 4 |
| leak database | https://leakprobe.net/ | Secure email check | 4 |
| Latest email Leaks | https://hacked-emails.com/latest/ | Secure email check | 4 |
| Hacked passwords | https://scatteredsecrets.com/ | Secure email check | 4 |
| Hacked emails | https://breachalarm.com/ | Secure email check | 4 |
| Dehashed, emails | https://www.dehashed.com/ | Secure email check | 4 |
| Strip HTML tags | https://www.browserling.com/tools/html-strip | HTML tags remove | 3 |
| Exif view remove | https://www.verexif.com/ | EXIF remover | 3 |
| Full emji list | https://htmlstrip.com/full-emoji-list | Full emji list | 2 |
| Hash decrypt | https://hashkiller.co.uk/ | HashKiller.co.uk is a hash lookup service | 4 |
| Hex binary convert | https://md5decrypt.net/en/Conversion-tools/ | Hex binary convert | 3 |
| MD crypt decrypt | https://md5decrypt.net/ | MD crypt decrypt | 3 |
| Hash crypt decrypt | https://md5hashing.net/ | hash dehash | 3 |
| MathTools | https://onlinemathtools.com/ | math utilities and tools | 4 |
| TechURLs news aggregator. | https://techurls.com/ | News Headlines, technology | 3 |
| Math URLs news aggregator. | https://mathurls.com/ | News Headlines, Maths | 3 |
| Financial URLs news aggregator. | https://finurls.com/ | News Headlines, Finance | 3 |
| TLD-list | https://tld-list.com/ | Tld, compare, domains | 5 |
| Ping | https://pingtool.org/ | Domain Tools | 3 |
| dpi resolution | https://www.sven.de/dpi/ | Screen pixel resolution | 4 |
| dpi resolution | https://www.pixelcalculator.com/ | Screen pixel resolution | 4 |
| Aspect ratio | https://aspectrat.io/ | Ratios | 2 |