Here's a list you might like... Some old, some new...
Some of this is taken from the thread I started back at the old Ectozone here (
http://ectozone.proboards.com/thread/28 ... fanfiction), but I've cut it back to focus more on E/J fics and added working links:
Ghostbusters: Forever by FritzLink:
http://www.ectozone.com/ff/gbforever.phpAfter fifteen years (or twenty two, depending on how you look at it) of confusion, denial, reversal, and dark moments of despair, the long-awaited day has come for one brilliant physicist and one spirited secretary to celebrate the love that bind their souls together. At long last, the wedding of Professor Egon Spengler and Ms. Janine Melnitz.
The Zodiac Imperative by FritzLink:
http://www.ectozone.com/ff/gbzi1.phpSomething is brewing in the skies...something that draws the unease of the Prince of Warlocks and many others. As a relationship takes a fateful turn...the Imperative is beginning...
Dreams Reborn by Fritz, EGB Fan, KingpinLink:
https://www.fanfiction.net/s/4167841/1/Dreams-RebornDecember 1997: Timeline Year 15. Peter Venkman, Ray Stantz, and Winston Zeddemore have returned to the company they helped build. Egon and Janine are finally together. Is there still a place for Eduardo, Kylie, Roland, and Garrett?
The Morning After, by Ami ReeLink:
https://www.fanfiction.net/s/2074221/1/The-Morning-AfterJust what the title suggests.
A Dish Served Cold by Cindy RancourtLink:
https://www.fanfiction.net/s/1307846/1/A-Dish-Served-ColdEveryone assumed Walter Peck was either an ineffectual bureaucrat or a clown. No one suspected the depths of his power -- or his evil.
The Last Laugh by Cindy RancourtLink:
https://www.fanfiction.net/s/1316533/1/The-Last-LaughSequel to Dish Served Cold.
Invasion of the Danish Snatchers by FritzLink:
http://www.ectozone.com/ff/gbids1.phpEgon and Janine's date is interrupted by the arrival of a crew of obnoxious gremlins who terrorize the Chateau Ritz restaurant. The rest of the Ghostbusters arrive to help out, but soon discover a teeny problem...
Reality Check by Jeff MorrisLink:
https://archiveofourown.org/works/6411397/chapters/14677582Something strange is going on in Angel Grove: monsters, witches, giant robots and other high weirdness. When three former Power Rangers request the Ghostbusters' assistance to find out what's really happening, all hell breaks loose. GB/Power Rangers Crossover.
The Eyes Have Her by ghostdivaLink:
http://www.ectozone.com/ff/gbehh.phpIn the depths of the Ghostbusters containment unit, many beings conversed. Some plotted escape, some plotted to rule over the others, some plotted dinner, and others… others sat around feeling sorry for themselves.
Conundrum by P. MorriganLink:
https://www.squidge.org/tobinsarchive/apoc/conundrum.htmE-J. Are they or aren't they and why should Peter care either way?
A Perfect World by Jeff MorrisLink:
http://www.jeffreysmorris.com/fanfic/rgb/pw/chone.htmlA lab accident wipes out all paranormal activity throughout the world! Peter's financial wizardry makes them rich! The Ghostbusters have everything they've ever wanted...or do they?
Requiem by Christine RennerLink:
https://www.squidge.org/tobinsarchive/requiem.htmBookends by Christine RennerLink:
https://www.squidge.org/tobinsarchive/bookends.htmBoth take place in the future.
Thorny Situation by batELink:
https://www.fanfiction.net/s/529894/1/Thorny-SituationEgon gets more than he bargained for when he tries to surprise Janine
Fateful Encounter by FritzLink:
http://www.ectozone.net/ff/gbfe.phpEgon Spengler goes on a little trip to the 1964 World's Fair, and in the Mort Weisinger tradition has his "true" first meeting with someone of no small significance to him! Inspired by a scene deleted from Ghostbusters
Fateful Opportunity by FritzLink:
http://www.ectozone.com/ff/gbfo.phpJanine Melnitz is a twenty four year-old single girl from Brooklyn who's just quit her last job. So, desperate to pay the rent, she takes her friend's advice to apply to a new company calling itself "Ghostbusters"...
Cavemen Blues by Sheila Paulson Link:
https://web.archive.org/web/20050527104231/http://members.aol.com/melchazat/rgb/caveman.htmOriginally printed in A Small Circle of Friends 3.
Fox Hunt by Sheila PaulsonLink:
https://web.archive.org/web/20060814141525/http://members.aol.com/melchazat/rgb/foxhunt.htmOriginally published in Ouch 3
Root of All Evil by Mary Jean HolmesLink:
https://www.squidge.org/tobinsarchive/mjh/Root.pdf"You love her - don't you?"
Typology by Lizabeth GreyLink:
https://www.fanfiction.net/s/6546290/1/TypologyA revelation leads to a couple of explosions, in different senses of the word. Mixed RGB and movie continuity.
The Damocles Solution by artisanroxLink:
https://www.fanfiction.net/s/6222394/1/The-Damocles-SolutionIf you only knew what I know, you'd wish you didn't know anything at all. A RGB fic.
EGB: All Things in Good Time by ArafelLink:
https://www.fanfiction.net/s/4328678/1/Eduardo and Kylie pick the wrong Friday night to study in Ghostbusters HQ.
Domino Effect by Audrey LynneLink:
https://www.fanfiction.net/s/7561483/1/RGB fans know of Janine's encounter with a demoness that changed both her looks and her life. This is how it happened, and the aftermath she and Egon were left to clean up.
Does Heaven Listen? by MilareppaLink:
https://www.fanfiction.net/s/1722487/1/An ancient god is rising in the heart of Brooklyn, determined to avenge a forgotten hurt. Only the Ghostbusters stand between him and the total destruction of humanity but this time even they think they've bitten off more than they can chew. (Unfinished)
Regina by Singe_AddamsLink:
https://archiveofourown.org/works/200951A clever demon uses his wits to make a bust go very, very wrong for the Ghostbusters in general and for Janine in particular. The aftermath is fun to deal with, too.
Been There by Singe_AddamsLink:
https://archiveofourown.org/works/642988Why is Janine the last to know The Truth about her relationship with Egon? Darn those reclaimed memories...
Still Life by emannepLink:
https://archiveofourown.org/works/132738A bombing at a municipal building has the guys having to battle demons while trying to rescue a trapped Janine.
Finally, this is a bit different. The first fic is not E/J, but the second fic is. I recommend reading the first fic before the second, for context (and because it's frankly an amazing fic on its own).
Three Options (no choices) by nightwalkerLink:
http://archiveofourown.org/works/332079Winston had a very practical application to survival situations, which was that if you were too busy to think, you were too busy to panic.
An Option of Last Resort by OmorkaLink:
http://archiveofourown.org/works/503724Being cooped up in the Firehouse during the Zombie Apocalypse isn't much fun.
Edited to add:
Qualifications by moemachinaLink:
https://archiveofourown.org/works/2843390On the subway, Janine mentally rehearsed answers to possible interview questions.
Discombobulate: A Collection of Short Stories by HypsidiumLink:
http://archiveofourown.org/works/3630393/chapters/8017206This is a collection of short stories. Most are set in the Extreme Ghostbusters continuity but some are movie centric.
Darkness at Noon by HypsidiumLink:
http://archiveofourown.org/works/3632127/chapters/8022006A retelling of the events of the first two episodes. Follows essentially the same plotline but set from Egon and Janine's mutual perspectives and changes a few details.