If you are learning about system security or maintaining older machines, understanding the spyware removal tools that were widely used in 2017 can still teach you core detection and cleanup techniques. Many of these free applications have been updated or serve as the foundation for modern anti-malware suites. Below is a curated list of ten free spyware removers from that era, each chosen for its unique approach to scanning, removal, and system protection. The list is ordered by general effectiveness and community trust, not by commercial affiliation.
Why 2017 Tools Still Matter for Security Learners
Spyware detection in 2017 relied heavily on signature-based scanning and heuristic analysis. By studying these tools, you learn how malware is identified without the cloud-based machine learning common today. Many of these applications also include portable versions, making them ideal for testing in isolated lab environments or on offline systems. Understanding their behavior helps you build a mental model of how anti-spyware engines work under the hood.
1. Malwarebytes Anti-Malware (Free)
Malwarebytes was already the gold standard in 2017 for secondary scanning. Its free version offered on-demand scanning with high detection rates for spyware, adware, and potentially unwanted programs (PUPs). The tool uses a combination of signature databases and behavioral analysis. For developers, the command-line version (mbam.exe) allowed scripting of scans in batch files. Note that the free version did not include real-time protection, which made it safe to run alongside a primary antivirus.
2. SUPERAntiSpyware (Free)
SUPERAntiSpyware specialized in removing spyware that other scanners missed, including tracking cookies, keyloggers, and browser hijackers. Its free edition provided full scanning and removal capabilities without time limits. The tool’s “Repair” feature could fix registry entries damaged by spyware. For lab testing, the portable version could be run from a USB drive without installation.
3. Spybot Search & Destroy 2 (Free)
Spybot S&D was a veteran tool that in 2017 still offered robust immunization against spyware by blocking known malicious hosts. Its “TeaTimer” background process monitored system changes in real time, though the free version limited this to manual mode. The tool also included a “Rootkit Scan” module. For learners, Spybot’s detailed log files are excellent for understanding where spyware hides (registry keys, startup folders, browser extensions).
4. AdwCleaner (Free)
Originally developed by Xplode and later acquired by Malwarebytes, AdwCleaner was a lightweight utility focused on adware, toolbars, and browser hijackers. In 2017, it required no installation and could be run directly. Its simplicity—a single scan-and-clean button—made it ideal for quick triage. The tool generated a detailed report in TXT format, useful for forensic analysis in educational labs.
5. HitmanPro (Free Trial – 30 Days)
HitmanPro used a cloud-based scanning engine with behavior analysis. Although technically a trial, the free version could be used for one-time scans indefinitely after the 30-day period, as long as you accepted the limited cloud lookups. Its ability to detect zero-day spyware via behavioral fingerprints made it a valuable addition to any toolkit. For developers, the command-line version allowed integration into automated security scripts.
6. Zemana AntiMalware (Free)
Zemana offered a free version with cloud-based scanning and a unique “Deep Scan” mode that checked memory, registry, and startup items. In 2017, it was praised for catching ransomware variants and cryptominers. The tool also included a browser extension to block malicious scripts. Its lightweight nature made it suitable for low-resource virtual machines used in penetration testing labs.
7. Emsisoft Emergency Kit (Free)
Emsisoft Emergency Kit was a portable scanner that used dual engines (Bitdefender and Emsisoft’s own). It required no installation and could be updated manually via signature downloads. In 2017, it was particularly effective against fileless spyware. For educational purposes, the tool’s “Quarantine Manager” allows you to restore or permanently delete detected items, teaching the importance of backup before removal.
8. Trend Micro HouseCall (Free)
HouseCall was Trend Micro’s free online scanner that used a browser-based interface (via a small executable). It scanned the system for spyware, viruses, and rootkits without conflicting with existing antivirus software. In 2017, it was one of the few tools that could remove deeply embedded browser helpers. The scan results included detailed paths and registry keys, useful for manual verification exercises.
9. Comodo Cleaning Essentials (Free)
Comodo Cleaning Essentials was a suite of portable tools including a scanner, autorun analyzer, and process viewer. Its “KillSwitch” feature allowed you to terminate suspicious processes and roll back system changes. For developers, the tool’s “Autorun Analyzer” is a great way to learn about startup persistence mechanisms used by spyware.
10. Microsoft Safety Scanner (Free)
Microsoft’s own portable scanner used the same engine as Windows Defender (now Microsoft Defender). In 2017, it was updated with new signatures every month and could be run on demand. Although not as feature-rich as third-party tools, it was invaluable for cleaning systems without installing permanent software. Its command-line support (msert.exe /F) allowed silent scanning in scripts.
How to Use These Tools Safely in a Learning Environment
Always run these scanners in a virtual machine or on a dedicated test system that you can restore from a snapshot. Never use them on production systems without full backups. Combine scanning with manual inspection of the generated logs—this is where the real learning happens. For example, after scanning with Spybot S&D, open its report and trace each detected registry key back to its source. This practice builds the analytical skills needed for more advanced malware analysis.
If you are interested in securing your social media accounts after cleaning spyware, consider reviewing our guide on Twitter mute tricks to filter out unwanted interactions. For developers who want to verify downloaded files before scanning, our tutorial on downloading YouTube videos with VLC explains how to use VLC's media information features to inspect metadata.
Finally, remember that no single tool catches everything. The best practice in 2017—and still today—is to use two or three scanners from this list in sequence, each from a different vendor, to maximize coverage. Start with Malwarebytes for general cleanup, follow with AdwCleaner for browser-specific issues, and finish with HitmanPro for behavioral detection. Always scan from a clean boot or safe mode to avoid interference from active spyware.
