There are lots of factors in Off page SEO but top five are given below.
1. Article Submission
2. Web 2.0
3. Document Shearing
4. Blogging
5. Forum Posting/Book Marking/Blog Commenting

The top five off page SEO techniques are:-
Forum Posting
Quora Posting
Guest Post
Blog Submission
Social Bookmarking

1) Article submission
2) Social bookmarking
3) Forum
4) Profile link
5) Social sharing

1. Blog posting and commenting
2. Guest blogging.
3. Forum accounts.
4. Article submission.
5. Directories submission.
6. Local business listing.
7. Social bookmarking.
8. Press Release.
9.PPT and PDF submission

1. Article Submission
2. Web 2.0
3. Blogging
4. Forum Posting
5. Blog Commenting

Top 5 Activities

Article Submission
Press Release Submission
Forum Posting
Blog Posting
Web 2.0

Top five off page seo activity:
article submission
blog submission
press release submission
directory submission
classified submission

Top 5 off page seo activities are:-

1. Forum posting
2. Blog submission
3. Blog commenting
4. Article submission
5. Press release submission

Content posting
Blog commenting
Forum Posting
Press release submission
Guest posting

Social Bookmarking
Forum Posting
Blog Post
Aritcle Post
Social Media Post

top 5 off page techniques
1. directory
2. articles
3. guest post
4. blog
5. forums

Top Five Off page Activity Are the

Web2.0 submission
Article submission
Blog submission
Forum posting
Social Bookmarking submission

Creating valuable backlinks. Creating backlinks is at the core of off-site SEO and is a technique that is crucial for any site with the aspiration of ranking on page one.

Profile Creations
Guest Blogging
Video Marketing
Question and answering
Local Directory Submission is all the good off-page activity work.