What are some alternatives?
When comparing Altospam and Spam Reader, you can also consider the following products
RansomFree - Protect your PC from ransomware with multiple detection methods.
Mailwasher - Over 8 million people use MailWasher as their spam filter
CryptoPrevent - CryptoPrevent is an Anti-Virus/Security Software Supplement, originally designed in late 2013.
Spamihilator - The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
Spamfence.net - Professional e-mail security free for private use: With Spamfence.
Bitdefender Anti-Ransomware - Bitdefender anti-malware researchers have released a new vaccine tool which can protect against known and possible future versions of the CTB-Locker, Locky and TeslaCrypt crypto ransomware families by exploiting flaws in their spreading methods.