| What it does | Free network diagnostic tools for DNS, IP, email and SSL checks
| A fast, private and offline API client for REST, gRPC, GraphQL and WebSocket services
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| Stage | Not given
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| Founded | Not given
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| Based in | IN
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| Pricing model | Freemium
| Open source
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| Pricing | Free plan: All 41 tools with unlimited checks, 3 saved domains with daily monitoring, 7 days of history. Pro plan: $29/month for 50 domains, scans every 6 hours, email, Slack, Telegram and webhook alerts, 12 months of history and API access.
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| Key features | - DNS Lookup - resolve A, AAAA, MX, TXT, NS, CNAME records
- Blacklist Checker - query 7 major DNS blocklists
- SSL/TLS Certificate Checker - verify certificate chain, expiry and protocol support
- Email Deliverability - check SPF, DKIM and DMARC records
- WHOIS Lookup - query domain registration details
- Reverse DNS (PTR) - check IP to hostname resolution
- Port Checker - test common HTTP/HTTPS ports
- BIMI Lookup - query BIMI TXT records
- Domain monitoring with automated scans
- Multi-channel alerts via email, Slack, Telegram and webhooks
| - REST and HTTP with every method, query and path params, JSON, XML, text, form-data, URL-encoded and binary bodies
- gRPC with server reflection or proto files, unary and server-streaming calls, metadata and trailers, TLS and mutual TLS
- GraphQL queries and variables with data and errors split out
- WebSocket text, JSON and binary messages with live message log
- Traffic proxy to capture HTTP(S) traffic of apps and phones
- Python scripting for pre and post-request scripts with tests
- Test cases and CI integration with chapar-cli
- Environments with variables and secret values encrypted with OS keychain
- Import Postman collections, OpenAPI specs and proto files
- Code generation for cURL, Python, Go, JavaScript, Java, Ruby and .NET
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| What makes it different | - 41 tools all available free with unlimited checks
- Clear sourcing - every result shows its source and what was not tested
- Live DNS queries from edge servers via DNS-over-HTTPS
- Domain monitoring and alerts with affordable Pro plan at $29/month
| - Local-only data with no cloud sync or telemetry
- GPU-rendered native UI that starts quickly and runs on macOS, Linux and Windows without a browser engine
- Collections stored as YAML files in git for version control
- Built-in traffic proxy for inspecting and importing HTTP(S) traffic from other apps
- Free and open source under BSD 3-Clause license
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 5 ▲ +1 (up) since last check | 6 ● no change since last check |
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| Trust Flow (Majestic) | 6 | 5 |
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| Citation Flow (Majestic) | 17 | 26 |
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| Referring domains (Majestic) | 6 | 31 |
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The Network Tools
Chapar