Mac OS Diagnostics The MacOS has great tools for testing hard drives. This program is called First Aid. Always backup your data before running First Aid scans of your hard drive. If there is a bad sector, any data that may have been accessible before running “Repair Disk” will likely become inaccessible once the bad sector is re-allocated. OBD Auto Doctor is the advanced OBD-2 software for Windows, Mac and Linux. The software enables you to communicate with your vehicle's On-Board Diagnostic system and turn your computer into a highly capable automotive scanner. OBD Auto Doctor is a must-have tool for everyone interested in getting to know their cars better. If the diagnostics were truly proprietary down to the design on the ECU, nobody but the vehicle manufacterer would be able to make diagnostic software/hardware. I believe the DOT mandated heavy vehicle manufacterers adopt this standard in order to prevent such things from happening. A free offering that should be one of the first to try. RaceChrono A popular lap timer app that logs both gps information and OBD data. The free version is time-limited, so if you find it useful, you will want to upgrade to the pro version. ScanMaster for ELM327 A great free app from WGSoft.de, makers of the other ScanMaster programs.

Windows computers have a number of wellknown and easy-to-use diagnostic tools, but the people in the Mac camp lackthat versatility. MacOS is known to be harder to work with, and most users findit easier to let a specialized tech handle the problem rather than deal with iton their own.

But if you hail from the land of DIY, thenthese tools are for you. We’ve put together a list of some of the most usefuldiagnostic tools on macOS to help you figure out why you’re leaking memory, whyyour CPU is maxing out, and where all of your hard drive space has gone.

Apple Hardware Diagnostic Software

OnyX (Download)

OnyX is a free disk utility for the Macthat’s perfect for ferreting out why things aren’t running as quickly or assmoothly as they should be. OnyX lets you run diagnostics on your hard drive,perform various system maintenance tasks, and delete caches you might not evenknow are there. It also provides access to a lot of hidden features in macOS.

The best part? OnyX is totally free. Theprogram is consistently updated to work with the most recent OS updates, so youdon’t have to worry about incompatibility. The creator releases updates soonafter Apple does, so if it doesn’t work quite right immediately after theupdate, give it a bit of time.

Disk Utility

Disk Utility is a disk utility (surprise!)provided with macOS that helps handle drive errors and corrupted files. It’salso the go-to tool if your Mac won’t boot into its operating system. If you’venever heard of it before, you can find it tucked away in the Applications >Utilities folder.

Mac Diagnostics Software Free Trial

Since Disk Utility comes with macOS, it’s afree program. If you have a drive that is throwing errors, you can run FirstAid on it after you launch the utility. You can also use this utility to createan image of your drive and export it to an external hard drive—a useful featureif your hard drive is failing.

MemTest86 (Download)

Apple computers are inscrutable in moreways than just their OS. Many of them make it difficult, if not impossible, towork on the hardware or modify it in any way. A Macbook tends to have all itscomponents soldered to the motherboard, but iMacs usually provide a way to swapout RAM. But as anyone that has worked with RAM before knows, it can be faulty.

When you find your RAM not workingproperly, give MemTest86 a spin. It’s a program that can be downloaded to abootable USB drive. When you want to use it, just press down the Option key asyour Mac boots. MemTest86 will test your RAM for any instability and help younarrow down where your memory problems might come from.

Malwarebytes (Download)

Malwarebytes is one of the most commonlyused programs for testing for malware. It’s more common for Windows users, butdespite the common belief, Macs can fall prey to malware and viruses.Malwarebytes is simple to use. Just run the scan at least once per month, ifnot once every two weeks, to make sure your Mac is free of any malware.

Even if the chance for a malware infectionis low, it’s still good to be on the safe side of things. A quick scan a coupleof times a month will keep you protected from phishing software, keyloggers,and much more.

DIY Diagnostics

As with any tool that lets you work inside the files of an operating system, use diagnostic tools with care. Make sure you are completely aware of what the commands you’re using do before you use them.

These tools can be tremendously useful for extending the lifespan of your Mac, but misuse of them can cause irreparable damage to your system.

CAN Log Viewer software is a free viewer, player, recorder and converter of CAN (Controller Area Network) logs. It can play your CAN recordings or display live data from our USB and Wi-Fi gateways on a PC screen in real time and highlight changing data.

Picture 1. Screenshot of CAN Log Viewer, click to enlarge

Since version 1.10, the program can list NMEA 2000 devices and show their properties (product and configuration information). If the program is connected using USB Gateway YDNU-02 or Wi-Fi Gateway YDWG-02, it also can enumerate NMEA 2000 devices, change its network addresses, device and system instances, configuration information (some manufacturers use it to change device's settings), and update firmware of supported devices.

Best Windows 10 Diagnostic Software

CAN logs contain network level data and compatible with any high level protocol, including J1939 and NMEA 2000. This simple tool will help you:

Mac Diagnostics Software Free Version

• view live and recorded network data in binary and readable form (using built-in viewers available for major J1939 and NMEA 2000 data types);
• list, configure and update NMEA 2000 devices (see the video);
• display historical data from our sensors;
• manage 84 loads from 3 digital switching banks;
• view Raymarine SeaTalk NG log files;
• identify what data are available on the network;
• with setup and troubleshooting of NMEA 2000 and J1939 equipment (more than 2000 J1939 DTC descriptions in database);
• analyze unknown CAN protocols (see Manual for a real example);
• convert log files to a spreadsheet and text formats for future processing;
• convert data prepared in a spreadsheet file for playing on a physical CAN network by Voyage Recorder;
• convert CAN logs with NMEA 2000 data to the format of YDVR Converter software (.DAT file);
• analyze recordings of Engine Gateway and NMEA 2000 Bridge;
• monitor live data from NMEA 2000 USB Gateway and NMEA 2000 Wi-Fi Gateway;
• record .CAN files from serial, TCP and UDP ports of NMEA 2000 USB Gateway and NMEA 2000 Wi-Fi Gateway.

Available viewers (click on the link below to view the screenshot):

Pc Based Automotive Diagnostic Software

• major J1939 data (two engines supported);
• J1939 active diagnostic trouble codes (DTC);
• all NMEA 2000 engine data (two engines supported);
• NMEA 2000 DC sources;
• major NMEA 2000 environmental data;
• major NMEA 2000 navigation data.

Hardware Diagnostics Mac

This product was designed as a supporting tool for various hardware products of our company, but all data formats are open (see the Manual) and data conversion to and from CSV (Comma Separated Values) is supported.

The following hardware and software products support .CAN format:

CAN Log Viewer runs on Microsoft Windows, Mac OS X and Linux. Software package also contains the test data with recording of the popular Volvo XC90 crossover. This product is a freeware and you may distribute it in unmodified form without any special permission.

User Manual (PDF)Download Software (ZIP)