Socrates, Circuit and Spotlight: you may find these sites while searching online, but you won’t be granted access. Unless, that is, you work at General Motors, Intel, or SunTrust Banks; these are intranet sites for those companies’ employees.

Intranets, proprietary social media platforms, mobile apps and rewards programs were on PRSA Connect13’s conference “employee social communications” agenda in New York on Tuesday, where corporate presenters ranging from industry leaders to resurgent companies shared case studies.

The following connection tips and tools aren’t new, but these companies, as well as SAS and IBM, found interesting ways to adapt them for employees.

1. Intranet: Circuit is Intel’s go-to platform, created to help employees follow company news and post related comments. Intel’s corporate initiatives director Melissa McVicker told attendees that employees use their personal pages to enter countdowns to their sabbaticals (which they earn every seven years).

2. Customized social media platforms: SAS maintains The Hub, hosted by SocialCast. Here employees join personal and work groups and give props to peers with a “thanks” feature. They’re also encouraged to submit ideas — and top-rated concepts make their way to R&D. CEO Jim Goodnight posts content, as do many employees. The Hub also serves as a real-time engagement platform: according to SAS internal communications manager Becky Graebe, two employees met, fell for each other and literally got engaged there.

3. Mobile apps: Intel introduced GoMyBenMobile, an app where its engineers and manufacturing employees have easy access to benefits information and company news without needing laptops.

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