I'm unable to play an instrument or use a MIDI device, so in order to get a melody into Sonar I have to either use my mouse and click each note in (a pain), or find a good audio to MIDI program. Melodyne is not doing a great job, whether i hum as clearly as I can, or whistle. Just the melody.
 
Is there any other audio to MIDI software that do a good job?
 
Thanks.
 

Before you give up on Melodyne you should look at the quality of the audio you are trying to extract the midi from.  
 
How are you recording the audio you are trying to convert? 

It's not as big a pain as you might think. There's more than one way to skin this cat, but a very simple pro tip is to use your keyboard solely for entering the -rhythms- of notes, without worrying about the pitch (which you fix later.)
 
For example:
  While recording to a click, pick a few adjacent white keys - any will do - and tap out the notes' rhythm.
  Then, go back in Piano Roll View and shift-drag the individual notes to their proper pitches (by ear) while retaining their placement in time.
 
You can get very fancy with this, and nobody will know - using three fingers you can pound in triplets, with four you can hammer in sixteenths, etc. As long as you are tapping along to the melody in your head, the note rhythms are taken care of for you and no real piano dexterity is required.
 
-djh
 

I assume that you do not have a keyboard. If you do then step recording offers one option to speed up accurate note entry. 
 
Not surprisingly a complex tone, and especially one not working from a fixed scale, like the voice is harder for a computer to discriminate, both pitch and attack (note beginning). Humming is probably the best way to mask the attack and confuse the computer. If you are going to use your voice, and I am not sure that is what I would advise, then using a voiced plosive like da or de or voiceless like ta or te nonsense syllable will give you a better chance. 
 
In any event, you will probably need to spend significant time cleaning up a conversion. Do not underestimate the value of entering notes by drawing them in. Writing little blobs of ink on staves has been the standard method of doing this for a couple of centuries. Compared to that, manual entry in SONAR is not so tedious. 

You do have Melodyne set to "Melodic", not "Percussive", right?
I've read so many positive comments on Melodynes audio-to-MIDI, that I tend to believe there's something more you could do to get acceptable results.
Have you tried "paa-paa-papaa" :o) instead of humming or whistling. That gives strong transients.

Another quick point is that certain versions of Melodyne cannot interpret pitch bend information. In addition to the plosive method mentioned above, you may also want to "snap to scale" in Melodyne first. A hum through the scale will insert sudden steps and separate MIDI notes where they cross the +/- 50 cent mark.

Build a chord library out of midi, with different progressions.
Use the Browser to drag in these chords to build songs.
I've been doing midi/audio for years and I still use this method now.
I have midi Chord library's, midi Drum library's, even audio chord library's like Mr. Anderton shared with us.
 
With all these ideas given, one thing should be said: Your ultimate goal should be to learn at minimum 1 instrument and some music theory. If you invest in Sonar it would be a waster to use it simply for humming and whistling your whole life. Progression is key and im not talking about progressive music .
 
Use the Library's as a crutch, as use Melodyne the same way, but as you evolve you should be learning even a basic understanding of theory. Because if you ever want to get these "Ideas" from your head in to your music/computer having an instrument at your fingertips is like the Pencil to the paper.

dhodgson
It's not as big a pain as you might think. There's more than one way to skin this cat, but a very simple pro tip is to use your keyboard solely for entering the -rhythms- of notes, without worrying about the pitch (which you fix later.)
 
For example:
  While recording to a click, pick a few adjacent white keys - any will do - and tap out the notes' rhythm.
  Then, go back in Piano Roll View and shift-drag the individual notes to their proper pitches (by ear) while retaining their placement in time.
 
You can get very fancy with this, and nobody will know - using three fingers you can pound in triplets, with four you can hammer in sixteenths, etc. As long as you are tapping along to the melody in your head, the note rhythms are taken care of for you and no real piano dexterity is required.
 
-djh
 

I agree - this is a great technique. Also if you sing or whistle/hum along to the tapping you have a guide track so you don't forget the melody

Thanks.

I am physically unable to play an instrument or MIDI keyboard and capture the pitches. I'm just looking for a way to get the monophonic melody into my DAW. I tried forceful, punchy syllables. The timing aspect is pretty good, but the pitches can be way off, sometimes by octaves.

Some songs have repeated phrases that can be in different pitches, so I copy the phrases, paste them, then adjust pitches. But I was hoping to find a way to get the pitches right so I can simply get the lead melody close to right and add chords (pre-recorded) as well.

I guess there is nothing better out there than Melodyne? If so, will keep trying.

Thanks again.

Try using a kazoo.