NetWorker shows network information conveniently in the menu bar. It also features a window that shows additional information about the currently active network adapter.

Scan, monitor, and troubleshoot wireless networks with WiFi Explorer.
Quickly identify channel conflicts, signal overlapping or configuration problems that may be affecting the connectivity and performance of your home, office or enterprise wireless network.

iNet provides you with information about networks your Mac is connected to. Its very easy and user friendly design allows even the unexperienced user to get a profound and understandable overview of a network and the running services. iNet is also available as iPhone and iPad App via the iTunes Store.

With Network Utility X you can quickly find all informations about your network. Information such as internal and external IP, ISP name, network name, MAC address, gateway address, subnet mask and DNS addresses.

Internet Speed test is a single threaded test while most others (like speed test dot net) are multi-threaded. It uses a single connection to download the sample files which is closer to what you actually do in your everyday browsing and downloading.

WiFi Explorer Pro takes the code base of WiFi Explorer, and adds a set of features that makes it the right tool for WLAN and IT professionals. You can use WiFi Explorer Pro for preliminary assessments, to help design and validate wireless networks installations, as well as to identify channel conflicts, overlapping, poor signal quality and other issues that may be affecting the connectivity or performance of your home, office or enterprise wireless network.

Murus Pro unleashes the great power of PF, offering a very wide set of features. It is a complete frontend for PF, and is bundled with Murus Logs Visualizer, an app to analyze PF logs and statistics, and Vallum, an application-layer firewall with real-time notifications. Access all advanced options to build and maintain a fully customized network infrastructure with your Mac.

Debookee is a LAN and Wi-Fi packet-capture tool and network analyzer that allows you to see what your devices are sending over the network.

WiFi Radar Pro lets you monitor your area networks; identify and troubleshoot issues with your home, small office, or enterprise network; and gather useful information about your network performance. Are you simply in search of an elegant replacement of the default macOS wireless utility? You've just found your ideal tool!

WiFi Signal is a system menu bar application that provides easy access to your Wi-Fi connection details (name, channel, transmit rate, signal strength, noise, etc.), monitors the signal quality of your wireless network, and can find and recommend alternative channels for your network thus avoiding signal overlapping and channel conflicts that can result in connectivity issues and performance degradation.

Paw is a full-featured and beautifully designed Mac app that makes interaction with REST services delightful. Either you are an API maker or consumer, Paw helps you build HTTP requests, inspect the server's response and even generate client code.

Dropzone makes it faster and easier to copy and move files, open applications and share files with many different services.

Dropzone 3 is a unique and amazing app that's like nothing you've ever used before.
We've paid fanatical attention to every detail and built an app that looks and feels like an integral part of OS X.

Net Radar monitors the status of your VPN connection and shows the current geographical location of your public IP address in the menu bar. Net Radar will warn you immediately when your connection is no longer private.

The best dynamic DNS update client on App Store with support IPv4 and IPv6. Also available on iOS, with iCloud synchronization.

RealDNS updates 18 dynamic DNS providers: Dyn, NoIP, FreeDNS, ChangeIP, DuckDNS, XpertDNS, Strato, DynDNS.it, DtDNS, EasyDNS, DNS Made Easy, CloudFlare, Google Domains, Namecheap, Hurricane Electric, Loopia, OpenDNS, GoDaddy.

Simon monitors websites and alerts you of crashes and changes.
Select pages to monitor, choose your alert options, and customize your settings. Simon does the rest.