I know you said you don't want comments on diet and everything, but that is where everybody should start at when evaluating/changing goals. You can gain weight off of diet alone. Supplements can/will help, but diet is first and foremost. That being said, here are some of my favorite supplements for mass/strength.
Creatine - you can either get this in bulk for cheap or find a product that contains creatine in it as well as other goodies like aminos...etc
Get yourself a good pre workout. This may not help that much, but for me, it's hard to train without a pre workout. I love getting a rush of energy and the pumps that come from ingredients contained in certain pre workouts. HyperMax XT is one of those. It's a strong stim so you may not even need a full scoop (which saves you money in the long run. The tub will last longer). Along with caffeine, HyperMax XT also contains glycerol and Agmatine which are great for pumps. Combine a product like this with ArA, and your workouts are going to be killer. Speaking of ArA...
X gels (ArA) is the one of the first things I would look at. Very popular and for good reason. Gives you a great pump throughout the day and the bottle will last you a while since you only dose on training days.
As far as natural anabolics go, all of us have our own preferences. You basically need to try a few and find out for yourself which ones you like best. The options listed by other users in this thread are solid. Anabeta Elite, AlphaMax XT and MassMax XT are 3 of my favorites. ABE and AlphaMax XT both contain forskolin so thats a plus. Forskolin is great for aiding in keeping unwanted fat off while bulking or aiding in fat loss while cutting. MassMax XT is totally different. While you can cut/recomp with it (diet dependent) it is mainly used for bulking. There are many logs on it right now. Some are sponsored. Some unsponsored.
http://anabolicminds.com/forum/supplement-reviews-logs/282772-naturally-growing-performax.html
http://anabolicminds.com/forum/supplement-reviews-logs/282698-performax-labs-natural.html
http://anabolicminds.com/forum/supplement-reviews-logs/282692-performax-beta-anabolic.html
Those are just a few. If you want/ need more, just let me know
MassMax XT is developed for weight gain/mass. Users have also experienced strength gains.
As with all of these natural anabolics, it's best to run them for 8 weeks paired with proper diet and training for best results. If you have any questions just let me know!
Good luck.