First, the usage is different.
1, Other: Other is a standard usage, which can refer to people and things.
2. Others: Others are daily usage, and generally can only refer to things.
Second, the parts of speech are different.
1, others: others can be used as personal pronouns or possessive pronouns.
2. Others: Others cannot be personal pronouns, but they can be possessive pronouns.
Third, the use is different.
1, Others: Others are generally used for normative written documents.
2. Others: Others are generally used for daily use.