Open-source alternatives to NetSonar
Projects with an open-source licence: you can inspect, modify and self-host the code.
Same categories and verticals plus the editors' list, in an independent order. Partners and ads never change it.
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rclone87
rclone (Nick Craig-Wood)
Sync files with 70+ cloud storage services
Open source 89 WindowsLinuxmacOS -
WinSCP87
Martin Prikryl (WinSCP)
File transfer over SFTP, FTP and S3
Open source 80 Windows -
WireGuard87
WireGuard (Jason A. Donenfeld)
A fast, modern and secure VPN protocol
Open source 80 WindowsLinuxmacOSAndroid -
EventLogExpert87
Microsoft Corporation
A Windows Event Log viewer for tech support and IT professionals.
Open source 77 Windows -
PerfView87
Microsoft Corporation
PerfView is a CPU and memory performance-analysis tool.
Open source 77 Windows -
WebLogic Remote Console87
Oracle Corporation
WebLogic Remote Console is a lightweight, open source console that you can use to manage your WebLogic Server domain running anywhere, such as on a physical or virtual machine, in a container, Kubernetes, or in the Oracle Cloud.
Open source 75 Windows -
Microsoft Ntttcp87
Microsoft Corporation
A Windows network throughput benchmark tool.
Open source 32 Windows -
OnionShare75
Micah Lee, et al.
OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network
Open source 77 WindowsLinux -
Wireshark72
Wireshark Foundation
Professional network packet analysis
Open source 80 WindowsLinuxmacOS -
FileZilla Client72
Tim Kosse (FileZilla)
The popular FTP and SFTP client
Open source 77 WindowsLinuxmacOS -
Microsoft Promptflow72
Microsoft Corporation
Prompt flow is a suite of development tools designed to streamline the end-to-end development cycle of LLM-based AI applications, from ideation, prototyping, testing, evaluation to production deployment and monitoring.
Open source 38 Windows -
CrystalDiskInfo67
Crystal Dew World
Monitor HDD and SSD health
Open source 80 Windows -
AeroFTP67
axpnet
A modern, multi-protocol file manager and FTP client with integrated AI, cloud sync, and military-grade encryption.
Open source 77 Windows -
AI CLI Usage Monitor67
macekkrystof
AI CLI Usage Monitor (Claude Code, ChatGPT Codex, Antigravity CLI)
Open source 77 Windows -
AI Limits67
napxlexn
A tiny native Windows 11 overlay showing your AI provider usage limits.
Open source 77 Windows -
AI Usage Dashboard67
neyham
Local Windows dashboard for Claude Code, Codex, Grok Build / X Subscription, Cursor, Antigravity, OpenCode Go, and DeepSeek usage.
Open source 77 Windows -
AIUsage.NET67
LuigiElleBalotta
Windows system tray app that tracks usage limits and spend for Claude, Codex, Cursor, Copilot, and other AI coding tools.
Open source 77 Windows -
AIUsageMonitor.Cli67
coldhighsun
Read-only CLI/WPF analytics for Claude Code's local usage data — usage reports, model breakdowns, and cost estimates without calling the Anthropic API.
Open source 77 Windows -
Alloy67
Grafana Labs
Grafana Alloy
Open source 77 Windows -
Angry IP Scanner67
Angry IP Scanner
Angry IP scanner is a very fast IP address and port scanner.
Open source 77 WindowsLinux -
Aura67
EnvBox
A Windows process-level environment virtualization launcher that shows target apps virtualized locale, region, language, timezone, and DNS values.
Open source 77 Windows -
azdash67
Sergio Triana Escobedo
Azure cost, trend, and waste diagnostics CLI.
Open source 77 Windows -
Bast67
Ellipse Software
Terminal-native OpenSSH host picker and key manager
Open source 77 Windows -
BATorrent67
Mateus Cruz
A privacy-first BitTorrent client with movie & game cover art, six themes, and zero ads.
Open source 77 Windows -
Baudrun67
packetThrower
Serial terminal for network engineers.
Open source 77 Windows -
beszel-agent67
henrygd
Agent for Beszel, a lightweight server monitoring platform.
Open source 77 Windows -
Bisq67
Bisq
A decentralized bitcoin exchange network.
Open source 77 Windows -
Bloxsmith67
holland-built
Self-contained Infoblox BloxOne NOC dashboard.
Open source 77 Windows -
bottom67
Clement Tsang
Yet another cross-platform graphical process/system monitor.
Open source 77 Windows -
BoxPilot67
BoxPilot Contributors
A GUI manager for the sing-box proxy program
Open source 77 Windows